"My Blaze" is the amount of Blaze Points you have in your wallet.
App: Tap the Blaze Icon in the right hand corner of the screen to get to your Blaze wallet.
Web: After you create an account, tap the Blaze Icon in the right hand corner of the screen to get to your Blaze wallet.
Your Blaze wallet shows your spending/earning history, ways to earn Blaze, and how to purchase more Blaze.