Mark on brand new stanchions, nail catches on it and it seems to let a little oil out with every compression of the fork, return?

If it’s a new fork and you have any way to return it, definitely do, on used forks, the common strategy is to sand it down and fill it with clear coat or something like gorilla epoxy or, honestly people use a variety of things but you want to get rid of the catch and then fill the divit with some type of acrylic