Found a lot of mounts for the smaller cube-shaped camera but not for the taller moveable camera so here you go. This uses a M3 screw and a T-nut to securely attach to the 2020 extrusion.
Printer Brand:
Creality
Printer:
Ender 5
Rafts:
No
Supports:
No
Resolution:
0.2mm
Infill:
100%
Filament:eSun PETG orange
Notes:
You can certainly print at a lower infill percentage, just be careful when you're tightening the screw.