I lost my left AirPod unit,
I lost my left AirPod, can i buy it on line from apple store?
Question marked as
See below from How to find your lost AirPods - Apple Support
If you still can't find your AirPod or Charging Case, or if something is damaged, get the serial number and then contact Apple Support for a replacement. Then learn how to set up your replacement.
You can also learn more about AirPod pricing and service options.