If i pop my pimple, will it scar forever?

Yes: Popping a pimple may cause a scar. Whether it is lifelong or for a few years is unknown. When you pop a pimple, you are disrupting the natural skin architecture. The cause of the pimple is a clogged oil gland in the skin but you destroy that entire area of the skin by popping.

It could. : Yes depending on dermal injury and size and cause, scarring is a possibility.