Hi @Ciatan, assuming you mean the one in the android app. Select Discover at the bottom of your screen, then select Health and Fitness Stats. You should find your sleep tile hiding there. Just select it again to bring it back to the dashboard.
If you have lost it from the on line dashboard near the top left of the dashboard you should find a box divided into squares. Select that and it should show you any available sections that you are not already displaying. Then just select the ones you want to add. This is where sleep from that dashboard should have been sent to.
Hope this helps. Cheers.
