fixing door, 96 camaro

i have a 96 camaro and where part of the door panel bolts up the hole is stripped out and the screw wont hold. i had the idea to fiberglass a few layers over the hole and re drill a new hole. would this work? and how will i keep the resin from running down the door and keep it there?

If I am not mistaking the door panels on a 96 Camaro are made of polypropylene. Fiber glass resin will not bond to this. Check the back of the door panel for the Identification code. It should look like this.

PP, PPE, PPO are not compatible with polyester fiberglass resins or fillers. ABS, PC,PVC are.
There are several expensive epoxy based products intended for automotive bumper repair that will not work for you either due to the limited surface area that you have to work with. I do not suggest going down that road.
I suggest purchasing the basic two part 30 minute syringe type epoxy that you can find at any hardware store. Grind the back of your door panel. You want a very rough surface to bond to. Cut 3 pieces of 3”x3” fiberglass woven cloth (Not matt it is not compatible). Wet the repair surface with epoxy. Lay down one layer of cloth. Wet again, and so on. Use two bondo cards to work the epoxy into the cloth (one to hold cloth one to squeegee).

And you do not have to worry about any material running down the panel because the panel will be horizontal on a work table and in a warm room for 24 hours while the epoxy fully cures.