It is actually on the right side of the dash, not under it. You can access it by opening the passenger door and then turning the knob on the cover panel.
It has the normal array of fuses protecting subsystems of the vehicle (i.e. ecm, lights, wipers, fuel pump, etc)
a FSM will have all the info, but here's a handy link:
https://fuse-box.info/chevrolet/chev...993-1996-fuses