Will popping pimples leave black blemish scar?

Not the key: Whether or not you pop them, you're likely to have hyperpigmentation and maybe depressed scars; the latter can be permanent. You owe it to yourself to get serious about managing your acne. If topical benzoyl peroxide as tolerated up to 10% 2x/day hasn't cleared you in two weeks, your physician can add something that will. Best wishes.