From your Shopify admin, go to Online Store > Themes.
Find the theme that you want to edit and click Customize.
In the left-hand toolbar, click Theme settings.
Click the Search result page.
The number of items per page: adjust the maximum number of items per type (product, article, static page) per page.
Products layout: specify the product item layout.
Articles layout: specify the article item layout.
Only apply when searching with products. These settings also work the same as the collection page. So you can refer to the infinity loading product settings on the collection page.
You can refer to this guide for more details.
Show author: show/hide the author.
Show date: show/hide the created date.