how to change my airpods name

For instructions on changing AirPods name, see the following from: Change the settings of your AirPods and AirPods Pro - Apple Support

Name your AirPods

1. Open your charging case.
2. With your AirPods in your ears and connected to your iPhone, iPad, or iPod touch, go to Settings > Bluetooth. Alternatively, you can go to Settings > AirPods.
3. Tap the More Info button  next to your AirPods. 
4. Tap the current name.
5. Enter a new name for your AirPods.
6. Tap Done.

With the AirPods connected to your iPhone, go to Settings and tap on the AirPods in settings. You can then tap on the name to change it and then the done button.