Yes, BABEL is a Scrabble word!

Letter values in Scrabble US: B 3, A 1, B 3, E 1, L 1.

Is it a valid word?

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

(Genesis 11:1-11) a tower built by Noah's descendants (probably in Babylon) who intended it to reach up to heaven; God foiled them by confusing their language so they could no longer understand one another
a confusion of voices and other sounds

Also: tower of babel.