To find the correct fuse and relay, you'll need to consult your owner's manual. The manual will have a diagram of your fuse box(es) and will specify which fuse(s) and relay(s) are involved in the fuel pump circuit. Look for anything related to the fuel pump, fuel injection, or engine control system.
Without your owner's manual, I cannot give you a precise location. Trying to find the wrong fuse could damage your electrical system. The owner's manual is your best and safest resource.