Hi @gilliamscott58,
A warm welcome here in the Roku Community, and thanks for the additional information!
We understand that you lost the screw on your Roku wire-free video doorbell camera. We're happy to assist you. We suggest that you might need to go to the physical store where you bought the Roku camera.
Please let us know if there's anything else we can help you with.
All the best,
John
John
Roku Community Moderator