Yes, REBUKING is a Scrabble word!

Letter values in Scrabble US: R 1, E 1, B 3, U 1, K 5, I 1, N 1, G 2.

Is it a valid word?

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

Also: call on the carpet, take to task, dress down, call down, bawl out, chew out, chew up, have words.