The copy function from the settings is to paste in the same window, it is not for other tools like .CSV, .xlsx or notepad. Export function is not available with the Dynatrace appmon only import is available,
but however hope my out of the box workaround might help you.
What I have did,
Step 1: copied the ipmappings.xml file which has the geolocation data from the location
<installation directory>/ server/conf/ipmappings.xml
Step 2: Upload to the online XML to Excel or CSV convertor
http://www.convertcsv.com/xml-to-csv.htm I used this website as it gave me the result which i'm looking for.
a) step 1 choose file and ignore step 2
b) Step 3 Generate output --> Click on the XML to Excel
Step 3: It will download a file which is in excel which looks like the below.