Epoxy sounds like a bad idea waiting to happen.
Not only that but REALLY bad idea.
If it's a screw can you see if there's the threaded section remaining in that position. If there isn't not all you would
have to have is the thread size & length to find a replacement.
If the threaded section is still in there, you can try using a small screwdriver to just unscrew it. Frequently
if the head is gone there's no torque on the threads, so easy, peasy. If it is there it's more of a challenge, ask
Shutterfinger here on the site.