The easiest way to check your Reward Credit and Tier Credit balance is through the Caesars Rewards app, which will show all the relevant information about your account, tier status, and where you can redeem your credits. It is also the best place to transfer Reward Credits to Online Reward Credits for use with Caesars Sportsbook.
On Caesars Sportsbook you can also see your credit balance for Reward Credits and Tier Credits on your account information, under Caesars Rewards.