Who can you sold the 100000 bill Dollar gold print?

You need to be clearer on exactly what you're describing. The US did at one time print a $100000 bill, but it was never in circulation and it was used basically for internal bookkeeping by the US government (to transfer large amounts of money between departments). Also, it wasn't "gold", but orange.

It's more likely that you've got some kind of (essentially worthless) novelty item.