You can add frontend form where users can add posts with reviews from 6.0.3 version.
For this, use bonus bundled plugin RH Frontend Posting PRO. You can download it from Rehub Plugins tab (required license registration in Rehub Registration ).
After plugin installation, create form for frontend posting. Each form has it’s own ID. You can see it on page with all created forms. Copy this ID. Go to Theme option Review Add review fields to frontend form . Add there ID of form where you want to add review fields (review heading, score and criteria).
Add review criteria below this field. That’s all. You can also check other user functions of theme here.