Vent pipe leaking above my bathroom. When I opened the ceiling found that none of the pipes were glued. Glued them, but had a hard time fitting them because they weren't level with each other. The leak is still ocurring at a Y joint. Is there any caulking or anything else that can be applied as opposed to ripping drywall out of entire bathroom to line up pipes properly?

Vent pipe is for Air. Unless you have rain water in them they should be empty...

If the pipes don't line up at the Y joint then you can use Flex Seal coupling to connect them. Cut short piece of pipe, glue it into the Y. Slip coupling over the other end, slide coupling over and tighten.