Checking reviews on your resturant

The review just counts into the score for the restaurant, you can't actually read what they said about the restaurant.

As Plantomlover1717 stated it's not a place you can go and read your reviews.
When a Sim come into your restaurant they do start off with a score of how they first feel about your restaurant, and these score changes while they are being seated and the whole dining experience at your restaurant. They will also have an ending score number as they leave.
Anytime you wish you can put your mouse over the number and it will tell you how they feel about your place.

Hope this helps, I am not an EA employee I am just trying to help. So if it did help please grant XP points ty.