how I can go from pudong airport to line 1 puxi sightseeing bus station?how long it takes?

Do you refer to City Planning Exhibition Hall (one stop of Sightseeing Bus Line 1)? If yes, from Pudong Airport, you can take subway line 2, get off at People's Square Station, Exit 2.

It takes around an hour on tehe way. The ticket fare is CNY 7 per person. Then walk southeast around 850 yards.
The exact pick-up station is located at No.100, People's Avenue, Middle Xizang Road.