To display product reviews on the homepage you need to paste given below code where you want to display on the homepage. And also click on ♡ the button, To remove any review from the testimonial section click on ♥. All reviews with the icon " ♥ " will be displayed in the Testimonial section.
Please follow App admin -->Rivyo product review --> Reviews --> All review.
here you can see reviews on the home page too as "Testimonials".