Is berber a word in the Scrabble Dictionary

Yes, berber is playable

...and is worth 12 points.

Found in the following dictionaries

OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Berber" Definition

noun

A member of any of various peoples living in northern Africa west of Tripoli.
A branch of the Afro-Asiatic language family comprising languages spoken by various peoples of northern Africa and the Sahara (as the Tuaregs and the Kabyles).
Any one of the Berber languages.