You're not gonna spin the engine by hand through the wheel or bump start it after it's been sitting, the carbs are most likely clogged. Your battery should read 12.6V+ if it's fully charged, 12.4(iirc) or less if it's dead. The clicking is your starter solenoid, your battery is dead. Either charge it or clean the carbs and try to bump it again. When you bump it you have to slam your ass down on the seat when you drop the clutch or it'll skid like you said
Also when you're getting moving to bump start it leave the transmission in neutral until you're ready to drop the clutch, less friction that way. Easier on the pushers