Hi. I am from Pakistan how could I get entry permit for Macau ? I already have family visa in China

If you go there for tourism purpose, you need to prepare those documents first including copy of your passport, your family visa in China, the completed application form attached with a passport-style photo, proof of your financial support, hotel reservation, transportation arrangement and your travel itinerary for Macau.
And then submit the application to Beijing office of Macau government to apply for the tourist visa if you are in China now.