My Airpod Pro (right ear) is not working and as far as I can tell it is not charging either. Can you suggest what I can do to fix this problem?

Did you try these steps;

If your left or right AirPod isn't working - Apple Support

Lee763 Said:

"My Airpod Pro (right side) is not working and as far as I can tell it is not charging either. Can you suggest what I can do to fix this problem?"

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Clean the Case:

Seems there is debris may be in the AirPods Case. So, open it up, and get debris out. Get a wooden toothpick, and a bring light in there, seeing if there is anything you get tap to pull out of it. No success? Use an ear swab to get the rest of it out.