Since linear scoring is bad, how about a logarithmic one:

• 10 dB: This is the best of the best. Nothing can beat this.

• 8 dB: This is very good!

• 6 dB: That’s nice.

• 5 dB: Eh, it’s fine.

• 4 dB: It’s a bit lacking.

• 3 dB: You need to do better than this.

• 0 dB: Bleh.

• -Infinity dB: This is the worst thing I’ve ever seen in my life.