Movement on a 2D tilemap

Okay, This may be a very generalized question,
But I can’t get a nav mesh bounds volume to do anything on my 2D tilemap.

I have it situated standing up, and everything is locked to the y and z axis. I have a few objects on the map that the sprites would be able to interact with. When I place the nav mesh nothing happens, and when I check for where it’s being applied, the green would show up on the colision boxes for the objects but not for the map itself. It was showing up on the top of the objects, which would mean nothing due to the orientation of the map.