When you receive a rating and review, you will get a notification of this under then notifications section. However, if the member only rates you and does not write a review, you will not receive a notification for this. The reason behind anonymous rating is to make it easier for members to give a low rating when it is necessary.
To view your overall ratings and reviews, you can tap "View my Profile" from the "More" menu in the coach app, then tap the "Reviews" tab.