I am taking airport bus #2 and get off at People's Square. How many stop is there in People Square?

Well, the airport shuttle bus line 2 runs from Shanghai Pudong Airport to Jing'an Temple. It doesn't stop along the way untill get to the terminus. If you want to go to People's Square, you need to take subway line 2 for two stops after off the bus at Jing'an Temple.
The hotel Majesty Plaza is only about 200m away from the exit 20 of People's Square subway station.