Is there any info out there on the find my drone feature on the dji go4 app. How does it work?

A find my drone feature can only show you the last recorded location.
That might be where your drone is ... or it might not.

Where your drone ends up depends on a lot of factors.
If  your drone was lost after signal was lost, maybe behind an obstacle or if you flew too far away, there would be no record of where it went after signal loss.