Different people keep different hives- langs with single, double or triple deeps, some number of mediums, some combinations of deeps and mediums, or other styles and sizes. All will have varying numbers of bees. The question cannot be answered in this manner.
Further, different bees can have different sizes. First, you have to establish what sort of bee you want to use, then measure the average carrying capacity of that bee. Then you have to establish what sort of person you want to lift- people come in a wide variety of size and weight. When you know how much weight you need to lift, it's just a matter of doing the math to determine how many (of what type) bees it will take to lift that mass...well, except for the fact that you would need to determine the method of attachment of the bees to the person, calculate the weight of the attachment method and how many additional bees (and their attachments) are required to overcome the differential.
Attaching with steel cable probably won't work, because the bees will never be able to overcome the weight of the attachments...maybe spider silk?
Have fun.