I have been playing this game for hours and i love it so much but i dont know how to perform finishing moves.

I have read so many online guides and none of them mention this. What is the main button to press to peform a finishing move??

There is no main button, as different finishers are assigned to different buttons. Some wrestlers require you to grapple and hit [] and X, some down+O, some require you to grapple a wrestler while they're on the ground, etc. Try entering a search for a moves guide for this game to see what buttons and in what position you need for a particular finisher you're looking for.

Thank you so much for your help. So your saying that all these wrestlers have different combos to perform finishers.....wow how can someone remember all that?

I have found an online guide

http://home.roadrunner.com/~billwood661/fpr_complete_guide.pdf

but every guide i look at doesnt mention anything about "finishing moves" all they mention is the basic and grappling moves

Can you help me?

Hmmm, there's not always a solid finishing maneuver, wrestlers seem to have several signature moves. It's not really button combos either, it's more like you press a couple buttons at the same time, not having to remember any sort of order.

Check out gamefaqs.com, they a few wrestler's moves listed like AJ Styles and Curry Man.

look up the movelist for the wrestler you want to perform finisher with. at the bottom of the screen the moves name is shown. on the left there is a field where you can choose either 'c' (that is finisher) or 's' (that is other signature moves).