Yes, LIVERS is a Scrabble word!

Letter values in Scrabble US: L 1, I 1, V 4, E 1, R 1, S 1.

Is it a valid word?

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

large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes
liver of an animal used as meat
a person who has a special life style
someone who lives in a place