Handful #18 answer

The seven tiles

B₄I₁R₁U₂G₃N₁B₄

The best three words: 56 points

1. RUBBING 31 points
2. BRING 13 points
3. BRUIN 12 points

The seven-letter word using every tile was RUBBING, which earns the 15-point length bonus on top of its tile values.

Other high scorers

BURIN 12BUNG 11BURG 11GRUB 11GUIB 11

There were 36 valid words of three letters or more in these tiles. A word scores the sum of its tile values plus a length bonus (4 letters +1, 5 letters +3, 6 letters +6, 7 letters +15), so one long word usually beats several short ones.