Q.DO I NEED 2 MACADEMIA TREES TO MAKE NUTS
DO I NEED 2 MACADAMIA TREES TO MAKE NUTS AND IF SO WHERE CAN I BUY A MALE AND FEMALE TREE TO SHIP TO FLORIDA. I DON’T CARE ABOUT THE PRICE I WANT TREES AT LEAST 5 FEET TALL

Macadamias can self-pollinate to some extent with one tree, but cross-pollination greatly increases nut production, so it's best to have two trees. Bees are the usual pollinators, and it they are unavailable you will need to pollinate by hand. Here is some information about which varieties seem to self-pollinate better than others:
http://stfc.org.au/macadamia-tips