Yes, TORTURE is a Scrabble word!

Letter values in Scrabble US: T 1, O 1, R 1, T 1, U 1, R 1, E 1.

Is it a valid word?

TORTURE is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

extreme mental distress
unbearable physical pain
intense feelings of suffering; acute mental or physical pain
the act of distorting something so it seems to mean something it was not intended to mean
the deliberate, systematic, or wanton infliction of physical or mental suffering by one or more persons in an attempt to force another person to yield information or to make a confession or for any other reason