Without more context, we can't say for sure. English phrasal verbs can mean many different things in different sentences, so everything depends on the context. In the context of a game or puzzle or some kind of mystery, if you 'give it away' you give people a clue to what the answer is. It is no longer a secret if someone or something has 'given it away'. 'Give it away' can also mean give something to someone without charging money. But please, give us more context!

Hi Fernando, it would depend on the context used, but it generally means that you give something to another person.