Add Custom fields

Yes, star ratings can be added to the form.
https://www.screencast.com/t/EnpjhuTFYZAK

And they can be edited in the post editor.
https://www.screencast.com/t/Dhfxc9IQu5

Try a demo to see for yourself: https://postonomy.com/demo/strong-testimonials/

Thank you for your very quicly answer !!!
In fact, I wish have more than 1 review.
My english isn’t very good, I don’t know if I’m being obvious enough…

Yes, you can add multiple ratings.
https://screencast.com/t/wsmuwxi77

Wonderfull !!!
I will test it
Thank you

That’s so great, I am so impressed !!
I installed it and created form, display and slider in 30 minutes.
Now all, I have to custom CSS.
Thank you very much