HOW LONG IT TAKES FROM SHENZHEN AIRPORT TO HONGKONG AIRPORT BY BUS AND WHERE DO I GET THE BUS ?

The bus journey take around 2 hours.
Actually, the ferry between Fuyong port near Baoan airport and the Skypier near HKIA is the fast and convenient way, which takes about an hour.
The place to take ferry and bus can be easily by following the direction boards in the Arrival Hall, so please do not worry.