Is it permissible for young people to agree to do a specific deed in exchange for a sum of money, provided that the money is given to another person, or is it permissible to stipulate a deed in exchange for a deed?

The question is vague, but from the phrases mentioned: what is likely a ju'alah (a promised reward for a specific task), which is permissible if the requested action is lawful, and the doer is entitled to what the promiser pledged to him, and there is no sin upon him if he relinquishes it to another person. It could also be a permissible promise, which is not binding according to the majority of scholars, but rather commendable. And it could be a form of betting and wagering, which is forbidden and impermissible.