yeah nightcrawler could keep teleporting and kicking all he wanted but A-poc would not be effected at all and if he would be nightcrawler would be long worn out by that time came along, just remember nightcrawler fought alongside the rest of the x-men against A-poc many times and it wasnt enough with the rest of the x-men. even though it would be funny as shit if night crawler went up to the tyrant that is A-poc and just grabbed ahold of his head and teleported with it and took his head with him leaving A-poc a dead headless caorpse, that would be funny as hell
In the comics, Nightcrawler can teleport on a few times before becoming extremely tired. I think the most I've ever seen is 5 quick teleports (aka BAMFs).
As for the question: that is about as a one-sided battle as the Phoenix vs Storm question. Apocalypse would annihilate Nightcrawler. Like the Phoenix vs Storm question, this isn't because one is weak, but because the other is insanely overpowered.