Hey I have a couple of questions to ask (hopefully they haven't been done before)

First of all:

I am just wanting to know that because I stuffed up a screw on my laptop am I able to open it some other way? its stuffed it up pretty bad, it wouldn't open before and my brother suggested to try to open it with a screw driver (dont do that at home people) and well its more screwed up and I am wanting to know if I can still open it somehow

Also is there anywhere I can buy some new screwdrivers because someone lost my tool kit and it had the screws in there so I have to go hunting again for my tool kit. Many help appreciated thanks allot.