While torque in English refers to a rotational force in physics, Maluma uses it here as a piece of cool, modern Colombian slang. It describes a person's impressive energy, power, and stylish presence.
In the lyric, "¡Qué clase, qué dura, qué estilo, qué torque!" (What class, how tough, what style, what swagger!), he's admiring the woman's powerful and confident aura. Learning this unique word gives you an amazing insight into regional Spanish slang that you won't find in a textbook.
Maluma throws out the smooth-talking player routine here and plays hype man instead. In "La Reina", he goes straight after anyone who made his love interest doubt her looks, bluntly asking, "¿Cuál fue el pendejo que te acomplejó?" ("Who was the jerk who made you insecure?"). He argues that heavy makeup and social media edits are completely useless on her, comparing it to putting digital filters over natural scenery. To drive it home, he calls her "la octava maravilla" ("the eighth wonder of the world") and insists she looks "criminal, así natural" ("killer, just naturally"). In Colombian Spanish, calling someone "otra vuelta" ("another deal" or "another level") means they are in a league of their own, and that is exactly where he puts her.
The heart of the track is about getting treated right. Maluma rattles off praise for her swagger ("qué estilo, qué torque" / "what style, what power"), but gets dead serious when talking about relationships: "Tú necesitas un tipo que te aporte / Que te dé flores, no golpes" ("You need a guy who adds value to your life / Who gives you flowers, not blows"). He is calling out mistreatment and setting a clear standard for what she deserves. It is an upbeat reggaeton boost of confidence reminding her that even her mirror does a double take when she walks by.