You appear to have a bifid nasal tip (not a bifid septum) in the columellar area which is created by the lower lateral cartilages of the nose. This is a common concern and something that can be corrected with a primary rhinoplasty. Please see a Facial Plastic Surgery specialist with special interests in rhinoplasty for a consultation. Correction your septum alone, if indicated, will not address the bifid nasal tip.
Its actually separation of the lower later cartilages in the midline...A thin graft will cover it beautifully ..Sewing it together makes it stiff and elevates the tip