cuantonoun

Cuanto means amount in English. It is a noun.

Te llamo en cuanto llegue a casa.

I will call you as soon as I get home.

Necesito una respuesta cuanto antes.

I need an answer as soon as possible.

Compré unos cuantos libros en el mercado.

I bought a few books at the market.

Come cuanto quieras, hay comida para todos.

Eat as much as you want, there is food for everyone.