The location of the fuel pump on a vehicle depends on the make and model. Common locations are in the back of the engine bay or in the gas tank if it is an electric pump. Mechanical fuel pumps are located directly on the engine.
The fuel pump is between the gas tank and the carburetor. It helps pump fuel between the gas tank and the carburetor. Without the fuel pump your vehicle wouldn't have the fuel going from the fuel tank to the engine.