I would to know the schedules about the Bus to Shanghai Pudong Airport to Nanjing.

There is no direct long-distance bus that from PVG to Nanjing.
Thus you are advised to take shuttle bus line 1 and get off at Main Railway Station first. Then take the direct high-speed train to arrive at Nanjing. The train schedules are from 05:54 to 20:59. The duration is around 2 hours.