Location distance between points in map

Hello All.

I have a query regarding geographical locations.

I’ve received 500 locations from another company for a service they wish to provide.

I have these locations plotted on a map and also have a coverage map generated using the atoll planning tool.

This coverage map allows me to export data in text format, indicating which signal each location receives from which cell.

However, I also want to determine the specific coverage zone (good, acceptable, or poor) for each location listed.

Since the GPS coordinates are different, this mapping process needs to be done manually by calculating the distances.

Can anyone help to find out about the location distance?