#1
So my friend just gave me the Bias FX software for me for my birthday, and I know I sound like a noob but, how do you use it? Like i have an amp and all, but how do i run the software together with my amp?
#2
Well, the short answer is you don't. That's not really what it's made for. That being said, you'll need a decent interface and you can run it into either the front end of your amp or (if it has an effects loop) the FX return.

List your gear and maybe we can help you get set up properly.
“Ignorance more frequently begets confidence than does knowledge.”
Charles Darwin