Try a disposable straw on soft or unset glue. That stumpy nubs guy has a tip on this a few months back. I'd link to his video but can't find it at this moment.
For the OP's situation, I would use a gooseneck chisel or a razor blade.
A good (and cheap) way to get glue out of tight spaces before it dries is to take a cheap plastic drinking straw and cut the tip at a steep angle. It gets into tiny places, its sharp, and the glue goes up the straw instead of smearing around. Great for dovetailed drawers.
One trick that works well on PVA glue is to grab some sawdust from the same wood and rub it into the excess. I t soaks it up and you can just rub it off. If you use water it just spreads it into the grain.