How to Get Your Screw UnStuck!
Another trick to get your screw unstuck is to place your screwdriver in the screw and tap it with a hammer a few times (only try this if the object is not breakable).
There are tools made to remove stubborn screws, so if you are in a pinch, see if one of your neighbors has this tool.
If need be, your local hardware store can point you to the right tool.