stripped screw holes out side by usb

The screen has 2 pins at its bottom near the USB/ charge port when I finally finished the battery screen replacement, snapping the new screen into place I went to put the hold down screws into place the new screen’s screw holes were striped or absent. I drove the screws in any way probably never to get them out. After a couple tedious days of much work on the phone I was not about to send the screen back for 2 screw holes. I though my phone was fully fixed. Than I tried to use my camera which now does not work. The lens of which appears to be out of place I was going to go back into the phone?