Where can I find Schindler's List for viola?

You can't. So do what violists have done for years and transcribe it yourself. It is possible to play it in its orginal key but that can be hard and too high for many violists. Take the violin part and transcibe it down a fifth.

I could not find anything for viola. You may have to transcribe it from the violin arrangement.

Actually, it might be better to transcribe it from a cello version : both viola and cello are C G D A so you would just have to raise it an octave.
Just a thought.

I would love to hear that played on the viola. Put it up on youtube for us please.

if you cant find a part for the viola
you can always play the cello part