Yes, AVOCADOS is a Scrabble word!

Letter values in Scrabble US: A 1, V 4, O 1, C 3, A 1, D 2, O 1, S 1.

Is it a valid word?

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

a pear-shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed
tropical American tree bearing large pulpy green fruits

Also: alligator pear, avocado pear, avocado tree, persea americana.