+3 from Paladin aura of protection with a cha of 16, and +3 with the Barb Wild Magic Magic Awareness feature by 9th due to your proficiency bonus
Aaaah OK nothing to do with Pally and Charisma at all then.
Its +7 then though. Proficiency is +2 at level 1, +3 at level 5, +4 at level 9. Thats of course character level, not class level.
