Chambear is a colloquial and somewhat informal verb meaning "to work" or "to hustle." It's a great example of everyday Spanish slang that adds a unique flavor to the lyrics.
In this song, it's used to describe someone who knows how to work hard and make money, fitting the theme of ambition and success. It's more vivid and less formal than trabajar, making it an interesting word choice for learners.
Herencia de Patrones kicks off their "Intro" with a blunt message: if you're scared, "tienes miedo, ve a la iglesia cada día" [you're scared, go to church every day]. The singer's mom prays for him, and he's been busy making money, adding "otros 15 a la cuenta" [another 15 to the account] this week. He's not a debutante, but he "con el diablo baila" [dances with the devil], showing he's not afraid to do what it takes.
He's super direct with listeners, saying if they don't like his songs, they can just change them: "No es obligatorio, la verdad, si no quieren escuchar" [It's not obligatory, really, if you don't want to listen]. He insists his stories are real, unlike others who exaggerate. He's changed a lot from the person he used to be, having "got it out the mud" and proven everyone wrong. He's not chasing women or fame; he's focused on making money and staying elevated, not to show off, but because that's just his life now. He even got a diamond piece for his jeweler to represent achieving what he once thought was impossible. It's a pretty intense and honest look at his journey.