You can build a dedicated reviews page to display all of your reviews by following the instructions below :
- From your Shopify Admin go to Online Store → Pages.
- Click Add pages and create a new page dedicated for reviews and click Save.
- In the Online Store → Themes section, click Customize on your theme.
- Go to the dedicated reviews page that you created and click Add section → Apps → Add block.
You can display your reviews in Basic, Grid, and Carousel style.
Please read Shopify's help articles below for further information.