Hiding Category is making the category invisible in the customer view and navigation menu while it is linked to other places on your store. The hidden category will perfect the internal purpose or any demand from store admins.
As you can see, Collections and Promotions were hidden by store admins. There are many ways to hide categories as you need, and the following guide will help you do that in an easy way while the customers are still sastified with your store.
Products > Inventory > Category.
General Informationtab, you need:
Include in Navigation Menufield.
Display Settingstab, choose No in the
General Informationtab, choose Yes in
Display Settingstab, choose Yes in
And now, the hidden category can be linked to other places on your site but it is not visible on the Navigation Menu.
Save Categoryto finish the hiding category.
It comes to the end of the tutorial: How to Hide Categories in Magento 2.