I started and finished 19 models, and spent uncountable hours on one subject that I started in mid-2019 and don't expect to finish for at least another full year.
I guess that adds up coincidently to 20...
1/3 scale 289 Mustang Engine
Supernatural Impala
Kawasaki Ninja H2R Carbon
Honda Monkey 125
Mazda MX-5RF
Flamed '57 Chevy (Cover car for the very last issue of Scale Auto)
C5RX-7 (Also a Scale Auto special edition cover car)
Mustang GT-4
Earnhardt '86 Monte Carlo
Greenwood Corvette
Starsky & Hutch Torino
Honda Fireblade 1100
C5 Monoposto Speedster
Ferrari 312T
Fast & Furious '72 GTX
S-10 Sonoma
Bede BD-5
Bede BD-J
XF5U-1 Flying FlapJack
Lola T-70 (still under construction after 19 months)