I am not sure what you talk about. The only function of that button is to turn ratings off for a project. It is turned on by default.
Reviews/Ratings are not attached to your project in a way that players can find those. Not even when clicking on the ratings stars. You cannot see other players's reviews. Not on demand. You have to previously follow another player or randomly encounter them in a feed. Some creators do rate projects, those reviews will get more visibility, if those creators have many followers - since the review now appears in the feed of their followers.