They AP system as we know it is in the process of being removed.
If you want to calculate your AP.
Every game you have rated is 2 AP. Every comment you have made is 2 AP. Every forum post you have is 1 AP. Every game you have submitted is 20 AP. Every merit you have received is 25 AP.
They AP system as we know it is in the process of being removed.
Correction... they are already removed and replaced by the new Quests system.
The only way for you to check how many AP you currently have would be the Player Ranking page, but since you have a low count and thus won't be in the Alltime Top 100 ranking, you won't be able to do anything else but what GhostOfHorror suggested. Sorry... =/