The path to enlightenment is so numerous that it is beyond one’s comprehension. One cannot say that there are a specific number of paths because Buddha has given different kinds of articles to suit the different levels of intellectual capacity of the beings.
According to the Mahayoga Tantra one teaching given by the realized wisdom mind of Buddha would be heard differently by the millions of beings according to their individual capacity.
Generally speaking, there are different Yanas or vehicles in Buddhism: the Shravakayana, Pratyekabuddha Yana and Mahayana. Mahayana is further divided into two Yanas