There is one screw on my oil pan that has oil around it. looks to be leaking. is there a fix, is it the gasket for the pan? or maybe just the screw? What would cause this, and how should I go about fixing it?
You could try removing the bolt and putting some Permatex Ultra Grey sealant on it to see if it stops. Otherwise only other option is to reseal the oil pan, which uses Fuji-bond as the factory seal, and Permatex Ultra Grey is fine as well.
There are pre-made cork gaskets available but they do not seal as well as a sealant does.
If the leak is only minor, I would wait till the next oil change and do everything at once. You could still do it with the pan full of oil as the other bolts are still holding it and seal is pretty well bonded to the block.