Yes, LEAR is a Scrabble word!

Letter values in Scrabble US: L 1, E 1, A 1, R 1.

Is it a valid word?

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

British artist and writer of nonsense verse (1812-1888)
the hero of William Shakespeare's tragedy who was betrayed and mistreated by two of his scheming daughters

Also: edward lear, king lear.