That's not possible when using DJI GO. Here are some things you could do:
If it's okay to retrieve the GPS coordinates after your flight, you could use a tool (like my log viewer or one of these) to create a KML file that can be opened in Google Earth. That would allow you to see your flight path and find the GPS coordinates along that flight path.
You could fly with a 3rd party app (e.g. Litchi or Autopilot) that allows the GPS coordinates to be displayed mid-flight.