Hey CharlesRosss,
Sounds like you'r having issues with your AirPod Pro 2nd Gen's showing up as 3 separate pieces on your Find My app.
Do you have all the AirPods placed into the charging case? If not, please place them in the case and test further. If all else fails, reset your AirPods Pro using these steps, as they're best equipped to assist:
1. Put your AirPods in their charging case, and close the lid.
2. Wait 30 seconds.
3. Open the lid of your charging case, and put your AirPods in your ears.
4. Go to Settings > Bluetooth. Or go to Settings > [your AirPods].
* If your AirPods appear there as connected, tap the More Info button 
next to your AirPods, tap Forget This Device, then tap again to confirm.
* If your AirPods don't appear there, continue to the next step.
7. Put your AirPods in their charging case, and keep the lid open.
8. Press and hold the setup button on the back of the case for about 15 seconds, until the status light on the front of the case flashes amber, then white.*
9. Reconnect your AirPods: With your AirPods in their charging case and the lid open, place your AirPods close to your iPhone or iPad. Follow the steps on your device's screen.
This is outlined further here: How to reset your AirPods and AirPods Pro - Apple Support
We hope this helps out. For more info on locating your AirPods, also check out: Find your lost AirPods - Apple Support
Take care!
