90's Durango - Mechanic told friend to scrap

Well he has spark, and fuel (although I didn't have a pressure tester, just used the schrader) no codes.

I tested compression
#1 - 90psi
#3 - 110
#5 - 85
#7 - 0

Yep, #7 was zero, I tried it a few times and same result. We didn't even go farther than that.