how to create the copyright on the map

Hi,

sorry for the late answer.

Your question is not really specific, it is about legal requirements or the technical details ?

For the first part you should read the Attribution Guidelines.

For the second, as hinted in the previous link, just leave the attribution as they are if you screenshot an OSM-based application that correctly displays attribution.

If you don't (want to) have end credits, you should at least display "Map data from OpenStreetMap." or something like that at some point.

Hope this helps.

Please ask if you have more specific questions.

Best regards.