Address reveal emails are sent ~36 hours, or the morning before, the day of the show (e.g. Thursday morning for a Friday evening show). The address details for your show can also be found in your dashboard or on the event page from 36 hours before the show.
If you haven't received the address reveal email by then, please first ensure that the email address on your account matches the inbox you're checking. If you log in through Facebook, the email address on your account may match the one you use to log in to Facebook with.
If you're sure that the email address is correct, check your spam/junk/promotions folders, as it may have ended up in there.