I have a 91 civic I don't know how much gas I have cuz da da gauge doesn't work where do i check first

 

"Cuz da da"

Please type in English.

Check fuses first I would assume.

 

Does the needle stay at empty, full, or somewhere in between?

Assuming the other gauges work, the first step would be to unplug the wires at the tank (under the back seat) and measure the resistance of the sender in the tank. It should be 0 to 40 ohms (depending on how full the tank is).