Looking  to go work in a FKK Club in Germany+ other countries is it hard for a American to work there ? Is there a porn star visit I can maybe get in with ? Any info would be great thanks ! !  !

I would contact some folks who live there and ask for their help.  I've PMd you with some specific suggestions.

Any girl can work at FKKs.
They let you sleep in for free, girls have to pay the girl entrance to work.
Some girls choose to go all legal and pay tax and get a German work id
Some girls do it all under the table and pay no tax
Many girls have pimps, many girls are indies
The only club that is hard to work at is Golden Time. But an American girl would be welcome I am sure.
I dont know about other countries but there is work in  Austria, Switzerland is expensive, Spain.