Left X-Axis Friction Fit Mount I put together to mount my Logitech C920 on the Ender 3 S1. You should be able to use any webcam that has a standard 1/4" tripod mounting screw insert. You will need to print out a 1/4" screw to mount your camera. This is the one that I used:
https://www.thingiverse.com/thing:3160367
Clarification: This model should be printed with the arms straight up with support on build plate only since there has been questions on it.