Enchochó is a colloquial and somewhat vulgar Spanish slang term derived from "chocho," which can refer to female genitalia. In this context, "se enchochó de mí" means someone became intensely infatuated or obsessed with the singer.
It's a very strong and informal way to say someone "fell hard" or "got crazy" for him, highlighting a passionate and perhaps overwhelming attraction. This word is interesting because it's not commonly found in mainstream lyrics and carries a raw, street-level expressiveness.
"¿Cómo Te Va, Querida?" is Rels B and Don Patricio's cheerful check-in with an ex, built entirely around one running joke: he asks her how she's doing, then answers for himself. The hook has him narrating his own life like a status update — "Cuéntame: ¿cómo te va, querida?" ("Tell me: how are you, my dear?") followed straight away by "Por aquí va todo bien, estoy viviendo la vida" ("Everything is going well here, I'm living life").
The verses back up that boast: a car upgrade ("Yo que andaba sin carnet, ahora voy en un bima" — "I used to be without a license, now I ride in a BMW"), girls waiting on him at the door ("Hay un par de pibas esperando en la puerta"), and a dig at the one who never took him seriously before ("Nunca hiciste ni caso a la canción que te escribí" — "You never paid attention to the song I wrote for you"). The swagger slips for a moment in the bridge, where he admits she's still on his mind at night ("Anoche no te vi, pero te imaginé" — "I didn't see you last night, but I imagined you"), before the song snaps right back to the same boastful hook to close it out.