If enough of the screw is above the surface, try using pliers. This method of removing a stripped screw requires a bit more muscle than most. Pliers will allow you to get a firm enough grip on the screw to pull it out. Locking pliers or vise grip pliers work best. Grip the screw on the sides.
How do you drill out a stripped hex screw?
How do you remove a hex head screw?
How do you get a stripped screw out of wood?
Place the extractor tip in the starter hole you drilled. Slowly spin the stripped screw remover counterclockwise and press down until you feel the extractor threads bite into the screw head. Turn the extractor slowly to back the screw out of the wood enough to grip it with the locking pliers and finish removing.