Installation Steps
Visit the Theme Installation page in the Retail Cloud Connect Shopify app
Ensure there is an available “Search and Browse” Serving Configuration available
Click the Install App Block button on the Search Results Page card
Hide the original Search results under Template or you will see double results

Copy a Google Cloud Catalog Project ID from the Theme Installation page and paste it in the App Block settings
Copy a Serving Configuration ID from the Theme Installation page and paste it in the App Block settings

Configure the additional settings as needed
Add custom CSS using the guidance in this knowledge base article