On your Hub, you can see each list you are on in the My Waitlists section. At the bottom of each list you are on you will see your general position. The positions are Bottom Third, Middle Third, or Top Third. The Estimated Wait at the top right is the estimated total amount of time you may have to wait from when you joined the list.
Exact positions on the list are not given because there are many factors that may affect how openings are filled. To avoid setting false expectations, only an estimate is provided.