Ok so i had to post this as a reminder for me and everyone with a cutlass supreme 1988-1994 square dash.
The latch for the glove compartment is a piece of shit design and they like to break and fall out which totally sucks. I always end up breaking one before i remember how they come apart.
There is a tiny hole in the knob on the underside and what you have to do is stick a needle or very thin paper clip into the hole and there is a spring loaded clip that has a hole in it and when you push the needle in there just right it will go into the hole and pull the small brass clip into the knob.
Once you achieve this (Not as easy as it sounds, and takes awhile for the first few times) you then turn the knob back 1/4 turn (counterclockwise) and it will pull out of the dash.
To install the knob back into the dash panel leave the pin in the hole and push it back into the positition that is 1/4 turn to the left and push it in until it is in all the way, then turn it to lock and pull the pin out.
you now have a working glove compartment again for awhile until it breaks again.
I usually just go to my local yard and pull a few good ones and keep a few spares but when i bought this new dash it was broken and i broke my other spare dashes too. lol lesson learned