No crank over/no dash lights

My name is Andrew, I have the car listed above z28. Just recently I have been having issues with the rpm-mph and volt meter rapidly jumping up and down. I went to work the other morning and I was doing the same thing but more aggressively and the engine power was cutting in and out every so often. I made it to work and I let it idle for a few minutes then turned it off. At the end of the day I got in and tried starting it but nothing. I have a door chime when I put my key in and when I turn the key to the on position without starting, no chime no dash lights and when I try and crank it does absolutely nothing. Battery is new and I checked all grounds and starter wires, battery cables etc. Also, all fuses are good. I am stumped from here. Do you all have any suggestions?