My lens for my camera got wet there was some condensation inside but it is now gone it is an auto-focus long range lens for Nikon D-80 can i still use the lens or should i just get a new one?

I would at least try the lense on a few pictures and see what the quality is. Depending on the price of a new one, you could even remove the front lense and clean it, or have it done by a professional.