You can view your currently active mask, the number of masks you own, the collection type, and the mask number. Operatives with multiple masks can switch between them by clicking on the active mask in the top left corner of the screen, then swiping left or right to view the other masks. Once you have selected your desired mask, click Activate Mask.
A general indicator of Energy is also shown as lightening bolts on each mask.
Energy Levels on the Mask
Up to 33%
The Refresh Masks from Wallet button will sync your game account to detect any new masks in your wallet.