Answer: No. Step Up can't recover the fee.
Step-by-step explanation:
From the information given in the question, we are told that Leon, who is a minor, signed a contract with Step-Up Employment Agency, where he promised to pay a fee on the condition that Step-Up Employment Agency gets him a job as a pianist. Leon tyem refused to pay the $500 after h was given the job.
In this scenario, for Step Up Employment Agency to get their fee, that means they must have signed a legal contract with Leon. From them to sign a legal contract, the person must be a major but we are told that Leon is a minor. Even if there was a legal contract, it will be void since Leon is a minor. Therefore, Set -Up Employment agency will not be able to recover the fee.