no valen nada

are worth nothing

→ no
phrase Rare #45,107
are worth nothing Used to say that something has no monetary value, usefulness, or importance. The subject is plural; the singular form is “no vale nada.”
SP: Sin confianza, las promesas no valen nada.
EN: Without trust, promises are worth nothing.

Los niños no valen nada si están muertos.

Children are worthless if they're dead.

— Avatar: El sentido del agua (2022)

En estos días, toneladas de billetes no valen nada.

These days, tons of banknotes are worthless.

— Porco Rosso (1992)

No valen nada.

They're worthless.

— La ola (2008)

Las palabras que no van seguidas de hechos, no valen nada.

Words that aren't followed by actions are worthless.