My gas gauge does not work at all is it my fuel pump filter or is it something else

Fuel gauges in general are a separate from fuel pump circuits. Usually you start by finding the fuse panel and check the gauge fuse, if the rest of your gauges are working this usually means the fuse for all gauges including temp, oil, fuel are ok. Next you'll have to locate the sending unit wires at the fuel tank and look to see if any are disconnected or damaged and have good clean connections. Next consult a factory manual regarding the method of checking the gauge some companies ground the wire or while others manufacturers require a variable poteniometer usually between 0-100 ohms resistance. slowly turn the pot from 0 through the specs to cause the gauge to sweep from empty to full while watching the gauge making sure it sweeps smoothly. If the gauge is fine the tank will have to come down and a new sender installed, also while you in the tank check that the fuel gauge float does just that floats!