Why is my badger .5 plus in sink erator leaking

One of your connections is either broken or missing a rubber gasket or a hose clamp. You have a lock ring on the top that basically bolts to the drain of the sink which is part of the disposal, IT has a rubber gasket or two on it, some have plumbers putty on the very top, the hose that goes from the dishwasher, if you have one, has a hose clamp on it, the drain line into the trap is a compression fit, needs to be tight, and it is usually bolted or screwed into the disposal itself with a rubber gasket. Check these out and tighten them up. Hope this helps.