Hello tawny167,
Thank you for reaching out in Apple Support Communities. We understand that the right AirPod is no longer working. We can help point you in the right direction.
Just to be sure, let's ensure that these steps were followed to troubleshoot the right AirPod:
If your left or right AirPod isn't working
Learn what to do if your left or right AirPod doesn't play audio.
If there's no sound in one AirPod
- Make sure that your charging case is fully charged.
- Place both AirPods in your charging case and let them charge for 30 seconds.
- Open the charging case near your iPhone or iPad.

4.Check the charge status on your iPhone or iPad to make sure that each AirPod is charging 

5.Put both AirPods in your ears.
6.Play audio to test both AirPods.
7.If an AirPod still isn't working, reset your AirPods or contact Apple Support.
This information is outlined in this helpful article and can help: If your left or right AirPod isn't working
If that doesn't help, you can visit this link here to review detailed of the service cost to replace the right AirPod: AirPods Replacement, Repair, & Service
Best regards.