With a meter or test light verify you have power to the small terminal on the solenoid. You should since you hear the click of it.
Clamp positive lead of jumper cables on battery positive, and touch other end of positive lead to battery cable at starter. If starter spins, solenoid is failed. If starter doesn’t spin, clamp negative lead of cable to negative post on battery, clamp other end of negative post to starter mounting bracket, and then touch positive lead to starter battery cable. If it still doesn’t crank, starter is failed.