You will see an increase in the cash back balance within your Fluz digital wallet.
Press the Menu (☰) button, and you should be able to view your available balance under Wallet. Alternatively, you should be able to see your available balance on the upper left side of your Fluz App.
You can also track your purchase history through your account settings.
Press the Menu (☰) button, and under Wallet, click on Past purchases.