To add the Best Seller badge as shown in the demo, please follow the steps below.
First, create a product metafield:
Go to Settings > Metafields and metaobjects > Products
Click Add definition and configure it as follows:
Name: Best sellers
Namespace and key(required): theme.bestseller_badge
Content type:
One value
True or False
After creating the metafield:
Go to Products
Open the product you want to display the Best Seller badge on
Scroll to the Metafields section
Set Best sellers to True
If the value is False or left empty, the badge will not be displayed.
Please check the video below for more details on the setup process.