If I used my AirPods on my cell phone where find my is set up. How come I can not locate my AirPods. It is saying no location found.

Hello,

If your AirPods are out of Bluetooth range, out of charge, or in the case with the cover closed, Find My won't give a current location. You just have to find them manually by looking for them. However, Find My may list the most recent location where they were last connected.

See this for more detail:

If your AirPods are lost

Good luck.