Goleé comes from the verb golear, which literally means "to score a goal" in sports, especially soccer. It's an interesting word because it's not commonly found in romantic or breakup songs.
In this song, Nicky Jam uses goleé metaphorically. When he says, "En esta situación fui yo el que goleé" (In this situation, I was the one who scored a goal), he's implying that he came out on top or won in the breakup, perhaps by realizing the relationship was bad for him. It's a clever and unique way to express victory in a personal situation.
The title is a football joke. Goleé is what you say after putting the ball in the net, and Nicky Jam files this whole breakup as a match he won: "En esta situación fui yo el que goleé" [In this situation I was the one who scored]. He opens by admitting that everybody had warned him. "A mí sí me lo habían contado" [They really had told me about it], he sings, "Que eras mala mujer, y que contigo me echaba a perder" [That you were a bad woman, and that I would go to ruin with you].
The sharpest line in the song is a piece of grammar. "Pa' mí éramos los dos, para ti solo era usted" [For me it was the two of us, for you it was only "usted"] uses the formal Spanish usted to measure the distance between them: he was saying "we", she was addressing him like a stranger. He gets the same coldness into an image of money, "Estar contigo es como ser un millonario" [Being with you is like being a millionaire] "Que puede tenerlo todo y a la vez no tiene nada" [Who can have it all and still has nothing]. And he does not pretend he is over it, because "Un día quiero arreglar contigo" [One day I want to fix things with you] and "Y al otro día me quiero ir" [And the next day I want to leave].