Yes, PLED is a Scrabble word!

Letter values in Scrabble US: P 3, L 1, E 1, D 2.

Is it a valid word?

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

appeal or request earnestly
offer as an excuse or plea
enter a plea, as in courts of law
make an allegation in an action or other legal proceeding, especially answer the previous pleading of the other party by denying facts therein stated or by alleging new facts