Remixed this camera mount for the Ender 3 S1 Pro.  I redrew this file to fix a slicing issue I had with thin walls around the screw.  This remix allows you to attach a webcam that uses ¼-20 threads to attach to mount.  You can either print the threaded insert or buy on amazon a ¼-20 metal rod to attach to mount and camera.

Mount - Printed with Pla+; 60mm/s; 25% infill, no support needed

Threaded rod - Recommend printing with a raft or brim as my print keeps getting knocked off at the very top.  Print at slow speeds and 100% infill.