This was a very interesting start to a story. It could possibly be maybe a second or third chapter also to set up your characters and locations. I was a bit confused as to whether it was a female or a male which was getting shaken. Also, I think you need a little more explanation of why the painting is so important.

I have also found you tend to repeat information you have already given the reader. Try reading your story out loud and listening to what you are saying.

***Remove the word “that” in as many places as possible where the sentence will still make sense without it being included.
***A couple of your scene divisions are 2 # and a couple are 3 #
***It is very awkward to begin a sentence with “but”. Usually, this means it should be connected to the sentence in front of it. Try and remove as many of the “but”’s as you can by possibly reworking the sentences.

I have included a line-by-line review below:
Red - needed changes
Blue -suggestive changes and comments

***The shaking and shivering didn’t last very long. About a minute or two before it suddenly stopped. (I would change this by combining the two sentences above: A minute or two later the shaking and shivering suddenly stopped.)
***I’m not sure how long I had been there. (comma not a period, if you use my suggestion) I think I had been there at least a couple of weeks. But I started losing my thoughts about it around a week after they brought me here. That was when I started shaking and shivering all over. It had happened before that. As soon as they brought me here, it started. (You are just repeating the first few sentences)
***I know my thoughts above are a little bit confusing(. (no parentheses) One thought I was thinking the shaking and shivering started after I got there. (comma, not a period, lowercase on -a) And the next thought it had already begun before then. I got somewhat confused a lot because of what was happening to me there.
***I tried to look where I had been thinking they were. But my bruised, battered, bloody face made the pain from what they had been doing to me hard for me to do that. (How would her face be bruised, battered, and bloody, especially bloody if all they were doing was making him shake and shiver. You could maybe mention his head shook back and forth hitting the sides of the chair.)
***After I tried several times, I gave up trying to do it. (It = what) Now I just stared straight ahead of me. Waiting for the next round of shaking and shivering to begun. begin. I didn’t need to wait too much longer before the Javin tried to kill me again.
***The only thing it did for me was help me kept keep track of about how many days I had been there.
***I spoke up. But my words were still unrecognizable most of the time. And garbled all of it. “What are you talking about? I haven’t done anything to any Metal Masterpiece.”
***“The First Leader of Javin. I didn’t take that. Because everyone know (add -s) it was the Private Protector protecting it who has taken it.”
***Payvon was about to cause me some more shaking and shivering to me.
***The lights in the other room where Dellion was in (comma) suddenly went off. A few minutes later Dellion walked into where I was.
***“What are you talking about? Are you answering my questions about why I’m here. (question mark not a period) ”
***Dellion looked at Payvon. Who told him what I had just said. (question mark not a period) “Look at her. She is barely there. Barely alive. Isn’t there something you can give her so we can all understand each other.”(question mark not a period)
***He put that on my neck. It instantly disappeared into my skin. A few seconds later, I open my eyes wide, and I sat up sitting up straight in the my chair I’m in.
***Dellion smiled. “Yes, I can too. Now we can get you to admit to what you have done.”
***The only way for you to admit it is for you to become that Private Protector again. You have already done it several times in the last couple of weeks. But you haven’t him yet.” (These two sentences don’t make sense)
***“Whatever it is, I can give you twice as many. (comma not a period, lower case on -i) If not a lot more than that.”
***And most of them had been males. (comma not a period, lower case on -b) But none of them had been this Protector.
***It was because it was easier to do. Males didn’t remember me. (comma not a period, lower case on -b) But most females can. I didn’t know why it happened like that.
***Every time Payvon tried getting her me to admit to taking The Leader of Javin I changed into someone else from my recent past. I had been on the planet of Javin for about six months now. And I had taken quite a few things. Most of them had been males. But there had been a few females too.
***The last a couple of times I came close to changing into that Private Protector. …I came close to him both times. (comma not a period, lower case on -b) But not quite the same. Enough of a difference that Dellion and Payvon didn’t recognize me.
***After I thought about it for a while, I came up with a way to stop any more changings changes from happening.
***For the past week, I had been feeling a lot better. (comma not a period, lowercase on -b) But I didn’t let Dellion and Payvon know it. I didn’t know at the time, but I could use it to help me stop those changings changes for from happening anymore. (two words) All I needed to do now was wait until Payvon tried to make me admit to what I have done.
*** I preferred both to be there when I stopped them from trying to make me admit to anything I hadn’t done. At least I hadn’t that time. When they began to approach me, I fought back.
***My hands and feet weren’t connected to the chair I was in after all. Once Payvon and Dellion got close enough to me, I used them to make them take my place in that chair. (How were they used? Remember the reader needs you to tell what is happening) Within only a few minutes, I was ready to give them what they had been giving me.

My review has been submitted for consideration in "Good Deeds Get CASH!" .