According to odds from SportsBetting.ag, Justin Herbert is the favorite to have the highest Wonderlic score of the quarterbacks from the 2020 NFL Draft class.

Quarterback with highest Wonderlic score
Justin Herbert +150
Jake Fromm +250
Jalen Hurts +400
Joe Burrow +500
Tua Tagovailoa +600
Jordan Love +800
Jacob Eason +800
Kelly Bryant +1000
 
Joe Burrow has an over/under Wonderlic score of 28.5.