Your reviews should always show up in your profile but it's possible you're using a different login method to access them, meaning they're in a different account.
If you used LinkedIn as your login to leave a review or earn a reward, then you’ll need to sign in with that profile again to find anything you did previously.
If you used a business email login, make sure you are signing in with the correct email address. It should be the address which received the confirmation email if you are looking for a reward.
Click here if you think you made a second account by accident.