Hi and welcome to the site.
Chances of pregnancy
would be much higher by doing in-vitro-fertilization. Most doctors are no longer recommending surgery to repair blocked tubes. The reason is that the surgery itself is very expensive. And results are not so good. Even if there is a pregnancy, there is a high risk that it will be in the tube. Money is better spent on in-vitro-fertilization. The women undergoes fertility
treatments to get eggs. The eggs are taken and mixed with sperm. After fertilization, the embryo is placed into the uterus
of the woman. Chances of successful pregnancy are much higher this way.
I hope this information has been helpful.