How many minutes will it take from emperor hotel to the HK airport? and what transpo can i use? thanks

Are you refer to the Emperor Hotel (Happy Vally) at No. 1, Wang Tak Street? If so, walk from your hotel to King Kwong Street to take bus no. 1 to get off at Pacific Place, Queensway, where transfer to bus no. E11 to HKIA directly. The whole trip takes around 90min.