Screw on gpu stuck can't screw it out or in.

that sucks. looks kind of stripped.
you could snip the top off with wire snips so the card'll fit flush but then may never get the rest of the screw out.
if you have an electric drill or strong electric screwdriver you can use a "removal" bit that digs into the stripped part. i've also been able to remove some stripped phillips heads with small flat-head tips. also can try pressing against the back of the screw with something while trying to unscrew it.