Abyssal 21
Celestial 20
Common 18
Deep Speech 16
Draconic 21 I mean, why wouldn't you want to speak Dragon?
Dwarvish 20
Elvish 18
Giant21
Gnomish 21
Goblin 20
Halfling 21
Infernal 20
Orc 20
Primordial 20
Sylvan 21
Undercommon 16 It's like Common but with a potato in your mouth. More gutteral! The Klingon of D&D! Yeah, no.