jaup and puja tie for the highest Scrabble score from jaup at 13 points. The top 4 of 4 words are shown here, with the full list organized by length below.
There are 2 four-letter words hiding in jaup: one comes from rearranging its letters, and jaup itself is already a playable word with no unscrambling required. No common everyday answer stands out among these four-letter results, so let the score decide: the highest-scoring words are jaup and puja, each worth 13 points in Scrabble.
Swap a single tile in jaup and you get a different four-letter rack with its own word list. None of these appear in the results above — they share 3 of the 4 letters, not all of them.
jaup is in the NWL, the official Scrabble word list for North America, and in the Words With Friends dictionary, so it's playable exactly as it stands and needs no unscrambling.
The 4-point gap between the two totals comes from the tile values themselves: Scrabble and Words With Friends price the same letters differently.
jaup is one of two four-letter words the same letters produce. No arrangement of the same tiles scores higher in Scrabble, so playing jaup unchanged also takes the maximum points these letters offer.
The highest-scoring plays from these letters are jaup and puja, worth 13 points in Scrabble, and nothing else built from jaup earns more points in Scrabble. Words With Friends prices the same letters differently, so the top of the list changes on a Words With Friends board. Both scores count tile values only and exclude premium squares.
The letters in jaup produce 4 valid words in the Scrabble and Words With Friends dictionaries. The word count by length is: 2 four-letter words and 2 two-letter words.