Yes, OBLOQUY is a Scrabble word!

Letter values in Scrabble US: O 1, B 3, L 1, O 1, Q 10, U 1, Y 4.

Is it a valid word?

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

state of disgrace resulting from public abuse
a false accusation of an offense or a malicious misrepresentation of someone's words or actions

Also: hatchet job.