vim from pakistan plz guide me how can i get HK visa and how much money need

Sohail, you should first provide the relevant materials including copy of passport, a completed application form, a passport-style photo, proof of your financial support, flight tickets, hotel reservation and your travel itinerary.
Next, submit the application to China embassy to apply for HK tourist visa.
There is no requirement for how much money you should provide. Usually, you should prepare at least USD100 per day.