So the idea is to register a new service provider with their location and the area served that he'll select (from 1-50km radius).

I want to make the radius visible on the map. I tried using a HTML field with a JS code that AI suggested, but it didn't work.

I also don't know how I'll retrieve this information later to match a client's location inside the service provider's area.

I'm completely blind in this scenario; any piece of advice will be very helpful.

I'm using WS Form for this, and I'll save the information in a CPT (Metabox) and in FluentCRM; I also have WPCodeBox 2 if needed.