Hi,
If those are indeed Apple AirPods Pro, you may reference the following to complete your AppleCare+ purchase:
- Apple Support App
- iPhone Settings > Bluetooth > AirPods “i” icon > AppleCare+ coverage available.
This applies only to the iPhone the AirPods are paired with.
- mysupport.apple.com
- checkcoverage.apple.com
- ARS
- contact Apple Support
It’s important to remember that products are eligible for an AppleCare+ plan, as long as the plan is purchased within 60 days of the products DOP.
https://support.apple.com/en-us/HT202702
https://support.apple.com/en-us/HT202741
Hope this helps!