Check if there is power to the dash. If there is no power at all, check battery terminals, battery, then fuse box and ignition. You will need to check voltages in this order, use a test lamp. Ensure that battery cables are well tightened.
If the dash comes on, but the bike does not crank, it is either a problem with spark or with fuel.
If you have not done it yet, test the kickstand switch. The switch can be tested reading Volts at the two contacts with ignition on. If kickstand is up there must be volts on both ends. The part can also be tested by jumping it. Here a picture:
If the kickstand switch is not the culprit, check the fuel pump. Test fuel pressure using a gauge like this:Lisle 20300
Fuel pressure with bike revving a bit will be 40/45 psi.
Check if there is spark when you crank. If there is no spark check distribution.
Have also a look at the throttle potentiometer. See here replacement cover and pot.