I have a 1993 toyota camry v6 and my speed meter and gas meter doesn't work how do I fix the problem my self

This may be two diffrent problems, first start by checking the fuses, check them all. next if you now how to unplug the fuel sender and then ground it, when unpluged it will read full when you ground it ,it will read empty, this is a way to see if the gauge is working, if the gauge reads when this is done then the fuel sender is bad and wiring and gauge are good, if it doesnt read then you will need to check gauge and wiring to gauge. next is speed, i would start by testing the sensor or cable to see if its working, your car may have a cable being a 1993, remove the cable and spin by hand and see if needle jumps also check for broken cable when removing, you can pull cable out of housing sleeve to see if its broken, start with these tests.