Yes, LADINOS is a Scrabble word!

Letter values in Scrabble US: L 1, A 1, D 2, I 1, N 1, O 1, S 1.

Is it a valid word?

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

a person of mixed racial ancestry (especially mixed European and Native American ancestry)
the Spanish dialect spoken by Sephardic Jews but written in the Hebrew script

Also: judeo-spanish.