Yes, EVANGELICAL is a Scrabble word!

Letter values in Scrabble US: E 1, V 4, A 1, N 1, G 2, E 1, L 1, I 1, C 3, A 1, L 1.

Is it a valid word?

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

relating to or being a Christian church believing in personal conversion and the inerrancy of the Bible especially the 4 Gospels
of or pertaining to or in keeping with the Christian gospel especially as in the first 4 books of the New Testament
marked by ardent or zealous enthusiasm for a cause