Chance of getting pregnant from dry humping with no penetration or ejaculation. (penis touched vagina but mostly in clit region). ?

Unlikely: Best to use a condom to prevent STD which can come from genital to genital contact even without penetration. Hope this was helpful.

Pregnancy chance: You are not very likely to get pregnant if there was no exchange of fluids. You can however get certain STD's such as Herpes doing what you described

Low, but...: Your chances are low, but it sounds like you need to think about birth control before the relationship progresses