Screen flows do not ship with a standard map component. Here are your real options, side by side.
Google Maps or Leaflet, chosen in the builder.
Clustering and custom markers for the records you query.
Draw zones and shapes directly on the map.
Select a marker and the record flows into your next screen.
Address search and field filters, right on the map.
Street, city, postal code. The map geocodes them for you.
Paths 2 and 3, side by side. A custom flow screen component is a Lightning Web Component you build and maintain yourself.
Work from addresses in a list or table inside the flow. It works, but your users lose the spatial view.
A custom Lightning Web Component on the lightning map base component. You write, test, and deploy it.
Installed from AppExchange, configured in the builder, live inside your flow. No code.
Install from AppExchange and start free with 10 licenses.