Yes, PRESSES is a Scrabble word!

Letter values in Scrabble US: P 3, R 1, E 1, S 1, S 1, E 1, S 1.

Is it a valid word?

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

the state of demanding notice or attention
the print media responsible for gathering and publishing news in the form of newspapers or magazines
a machine used for printing
a dense crowd of people
a tall piece of furniture that provides storage space for clothes; has a door and rails or hooks for hanging clothes
clamp to prevent wooden rackets from warping when not in use
any machine that exerts pressure to form or shape or cut materials or extract liquids or compress solids
a weightlift in which the barbell is lifted to shoulder height and then smoothly lifted overhead
the act of pressing; the exertion of pressure

exert pressure or force to or upon
force or impel in an indicated direction
to be oppressive or burdensome
place between two surfaces and apply weight or pressure
squeeze or press together
crowd closely
create by pressing
be urgent
exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for
press from a plastic
make strenuous pushing movements during birth to expel the baby
press and smooth with a heated iron
lift weights
ask for or request earnestly

Also: public press, printing press, mechanical press, military press, urge on, press out, iron out, weight-lift.

Not playable in Scrabble US: WEIGHTLIFT.