Yes, HELLERS is a Scrabble word!

Letter values in Scrabble US: H 4, E 1, L 1, L 1, E 1, R 1, S 1.

Is it a valid word?

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

100 halers equal 1 koruna Slovakia
100 halers equal 1 koruna in Czech Republic
United States novelist whose best known work was a black comedy inspired by his experiences in the Air Force during World War II (1923-1999)
a rowdy or mischievous person (usually a young man)

Also: joseph heller.