Do I have protruding mouth/teeth or recessed chin ? Should I get a V-line genioplasty?

It appears that you have both a recessed chin and a somewhat short chin. The depth of the mentolabial fold increases when the chin is short. A genioplasty to both lengthen the chin and move it forward would improve your overall facial balance. Unlike other procedures, the purpose of the genioplasty is to balance the face and therefore and provide a youthful jawline.

You do have a short chin that is round as most short chins are. From a bony standpoint a t-shaped genioplasty is needed to being it forward and narrow it. Another option is the v-shaped anatomic chin implant if one prefers a non-bone moving approach.