You can check the current balance of your Ubisoft Wallet on: 

You will be able to find your balance displayed next to the Wallet icon on the top of the webpage.

If you are on a mobile device, select the hamburger menu in the top left corner of the screen, you can see it next to your Wallet.

Open the management page to see your current balance and additional details.

If you are on a mobile device, select the hamburger menu in the top left corner of the screen and choose Manage my Wallet.

You can find the balance of your Wallet in the top right corner when you open the client.

Please note that you will not be able to see the balance in offline mode.