Fuel Gauge does not show how much gas is in the tank currently how do I fix this problem

first thing my car has almost half a tank in fuel but the fuel gauge is denying all this, it says empty, when i turn in the key nothing happens, I turned to check if the battery is fine, and have taken out the starter to test and all was a success, i checked fuel pump relay and fuse and i got about 106.6 ohms. Please assist what could be the issue with my ride. Thank you