You can go to Collection Page > Sections > Collection Page
Products per page: Number of products per page
Space between products
Pagination: You can choose the Default, Load more button, Infinit Scrolling
Show progress bar?: Only active when you use 'Load more' or 'Infinit scrolling'
Products per row (desktop, table. mobile)
Show product vendors
It only shows when the product set "product.metafields.meta.countdown"
You can set the same height for all the image products.