Yes, REFERRING is a Scrabble word!

Letter values in Scrabble US: R 1, E 1, F 4, E 1, R 1, R 1, I 1, N 1, G 2.

Is it a valid word?

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

make reference to
be relevant to
think of, regard, or classify under a subsuming principle or with a general group or in relation to another
send or direct for treatment, information, or a decision
seek information from
have as a meaning
use a name to designate

Also: bring up, come to, bear on, touch on, have-to doe with, look up.