Rencor translates to 'grudge', 'resentment', or 'bitterness'. It is a strong, expressive noun used to describe holding onto past pain or anger instead of moving forward.
In the lyrics, Bad Bunny sings, "Que no tengo tiempo pa' guardar rencor" (I don't have time to hold a grudge). By pairing it with the verb guardar (to keep or store), he highlights the mental toll of storing up negative energy, ultimately urging listeners to let go and live freely before their time runs out.
Bad Bunny's "ANTES QUE SE ACABE" is a massive call to live in the moment. The whole idea is right there in the title: Before It Ends. He accepts that life is a mix of good and bad days, saying, "Un día bien, al otro mal / Así es la vida y eso no va a cambiar" (One day good, the next bad / That's life and it's not going to change). Instead of fighting it, he decides to embrace everything, from crying on rainy days to celebrating when the sun comes out.
He's basically throwing a party for being alive. He invites everyone to have "Un shot de amor" (A shot of love) and wants to live so fully that "si me muero es contento" (if I die, I'll be happy). The song is full of these big, simple ideas about life: choose kisses over arguments, hug people regardless of their color because "aquí to' somos iguales" (here we're all the same), and remember your worth comes from how much you love. It's a powerful reminder to be the director of your own movie before the credits roll.