Yes, AIMED is a Scrabble word!

Letter values in Scrabble US: A 1, I 1, M 3, E 1, D 2.

Is it a valid word?

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

point or cause to go (blows, weapons, or objects such as photographic equipment) towards
propose or intend
move into a desired direction of discourse
specifically design a product, event, or activity for a certain public
intend (something) to move towards a certain goal
direct (a remark) toward an intended goal
have an ambitious plan or a lofty goal

Also: take aim, draw a bead on, shoot for.