Ok guys my pressure switch is kicking on at 10 psi and off at 70 psi how do I fix it or do I need a new pressure switch thanks

Switch may be defective or may simply be clogged. Turn breakers off and drain system down. Remove switch and clean, also clean pipe that switch is mounted on.

You may have a defective gauge; does the flow of water coincide with the gauge reading? You can check the accuracy of the existing gauge - buy a gauge at the home center, and an adaptor to connect it to a hose bib.