Salam .I am 23 year old. My ovary and uterus is absent by birth. And I have no vaginal opening .is there any traetment so that I can marry and spend happy marietal life

Normally there would be a opening, merely covered by a layer of skin that has to be removed. This is rare.

But only your doctor can tell you exactly what your medical condition is and what can be done. No one here knows what caused your issues and how seroius they are.

Surgeons are able to construct a vagina. You may have to travel to find a specialist. If you want to tell us where you are located, we might be able to look online. A large medical center near you would be the first place to ask for referral.

If a male can be transformed into a female (which has been done), then they should be able to help you. You will probably need a plastic surgeon to do the work for you. I would start with your physician for a recommendation.