I'm not sure if it is fair to call a 14 year old Jewish boy who is posing as a Christian in Nazi-occupied Hungary to save his life a Nazi collaborator, just because he accompanied the person hiding him while that person was "confiscating" Jewish property.
But the interview seems to be real.
It is from 20. December 1998, according to the Congressional Record, V. 152, Pt. 16, September 29 2006. However, it is missing some parts from Soros response to the question if it was difficult:
Kroft: Was it difficult?
Mr. Soros: Not - not at all. Not at all. Maybe as a child you don't - you don't see the connection. But it was - it created no - no problem at all.
The interview goes on:
Mr. Soros: Well, of course I c - I could be on the other side or I could be the one from whom the thing is being taken away. But there was no sense that I shouldn't be there, because that was -- Well, actually, in a funny way, it's just like in markets -- that if I weren't there -- of course. I wasn't doing it, but somebody else would ... be taking it away anyhow ... whether I was there or not, I was only a spectator, the property was being taken away. So the -- I had no role in taking away that property. So I had no sense of guilt." ("George Soros." 60 Minutes interview transcript. December 20. 1998)
There are some fake or reenacted videos out there, but this seems to be the actual 60 minutes video (the uploader is obviously politically motivated, so there is some doubt left, but the video does not look manipulated, and it matches the congressional record above). The relevant part starts at minute 8.