How can I change the maximum rating?
Changing the overall maximum rating number can be done via the settings page. Head over to ‘Reviews’ -> ‘Settings’ -> ‘General’ and look for the ‘Max rating score’ setting. There you can set the maximum allowed score that you can assign within a review.
Changing this value will allow you to set a rating up to this maximum score. It is important to note here that the rating icons (stars by default) are based on this number and will change accordingly.
For example, if you already have exiting reviews based on 5-star ratings and change the maximum rating score to 10, you’d probably want to update the existing reviews to represent the correct score.