You can easily assign discount profiles to all products within one or more categories. Visit WooCommerce -> Bulk Pricing and click on the “Categories” tab.
Tick the box of the category then choose the ruleset and click “Update categories”. This will assign the selected discount profile to all products in that particular category.
You have 3 products in your category “Home & Garden”:
This is how they will appear individually on WooCommerce site before assigning a discount profile to the category:
And this is how they will appear on their individual product pages after you’ve assigned a discount profile to the category “Home & Garden”: