I'm new here, is your post count also your AP, and if not, how do you check it?
Post count only gives you 1 AP. There are also other ways to get AP, so post count is NOT your AP.
To see how much AP you have got, click on your profile and find a dark blue box. Then on the top left of that box, you should see a big number, that is your AP. You can repeat the process in anyone's profile.