Handful #1 answer

The seven tiles

R₁R₁D₂B₄B₄E₁A₁

The best three words: 67 points

1. DRABBER 29 points
2. BARBED 19 points
3. DABBER 19 points

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

Other high scorers

BARBER 18BARRED 16ARDEB 12BARDE 12BARED 12

There were 48 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.