How to unscrew a stripped screw? well, it is easy, Sometimes the screw gets stipped which means the head part of the screw is bored-out and there is no exact shape of which type of screwdriver will attach to it.
A few tools work on the stripped screw and it can be unscrewed easily, these methods use basic tools which you can find easily such as steel wool, pliers and rubber bands.
All of the different methods to unscrew a stripped screw are explained below
1: Flathead Screwdriver

A Flathead screwdriver is pressed hard enough it can use to unscrew by angling the screwdriver and it is the easiest way.
2: Large Driver Bit

If you are using a drill, change the small bit to a large bit and use it on the stripped screw, when the larger bit is used it reshaped the head of the screw and it can easily unscrew it.
3: Pliers

Using pliers is the easiest way to get a stripped screw out because you can just pull the screw with it, no matter if the screw is almost all the way in just put enough force into it.
4: Manual Screwdriver

A manual screwdriver is superior if you are unscrewing a stripped screw to an auto Screwdriver because a manual gives you more torque over the other and the drill sometimes slips.
5: Steel Wool

There is no grip while using a screwdriver and most of the time it can slip, not if you use steel wool, you can just put it on top of the stripped screw and use any screwdriver because the grip will be stronger between the screw and the screwdriver due to the steel wool.
6: Hammer

Put the manual screwdriver on the stripped screw and tap the hammer on top of it, with enough force it can fix the screwdriver a little bit in the screw and you can unscrew it easily.
7: Slot on a Flat Headed Screw

Use a metal blade tool to cut a slot on the screw in a straight line and it can make a groove which is for the flat-headed screwdriver to unscrew easily.
8: Abrasive Powder

The more friction the merrier for unscrewing a stripped screw and you can apply it with the abrasive power and it works the same as steel wool, after putting it on the screw use any screwdriver to unscrew it.
9: Drill into the screw

Drilling in the screw helps because it can make a hole to fit a certain type of screwdriver in it, you must use a smaller bit than the screw to make a hole, when done unscrew it with a screwdriver.
10: Rubber Band

You can use a rubber band to get grip on the screw and unscrew it. Lay s a larger piece of rubber than the screw on it and use the screwdriver on top of it to unscrew it.
Reference: 10 Ways to Remove a Stripped Screw (thespruce.com)