Yes, VISIONS is a Scrabble word!

Letter values in Scrabble US: V 4, I 1, S 1, I 1, O 1, N 1, S 1.

Is it a valid word?

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

a vivid mental image
the ability to see; the visual faculty
the perceptual experience of seeing
the formation of a mental image of something that is not perceived as real and is not present to the senses
a religious or mystical experience of a supernatural appearance

Also: visual sense, visual modality, visual sensation.