In total, there are 54 words across the complete collection of English language dictionaries that we have on WordsRated that are 4-letters long and contain AY.
The words on this list are worth 9.1 points in a game of Scrabble. The word that is worth the most points is QUAY. In Scrabble QUAY is worth 16 points.
If you are playing Scrabble, it could be worth your time to check out some related lists. Given you are interested in words with 4 letters and you have the letters AY, it also makes sense to look at 4-letter words ending in AY and words with AY.