Yes, SHINED is a Scrabble word!

Letter values in Scrabble US: S 1, H 4, I 1, N 1, E 1, D 2.

Is it a valid word?

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

be bright by reflecting or casting light
emit light; be bright, as of the sun or a light
be shiny, as if wet
be distinguished or eminent
be clear and obvious
have a complexion with a strong bright color, such as red or pink
throw or flash the light of (a lamp)
touch or seem as if touching visually or audibly
experience a feeling of well-being or happiness, as from good health or an intense emotion
make (a surface) shine
climb awkwardly, as if by scrambling