How do I delete a category or subcategory?
On the store manager, click on the Categories under Catalog tab.
From the listed categories, choose the one that you want to delete.
Now after opening that category or subcategory, click on the Delete button under Action tab.
And then click on OK to confirm the action.
You will not be able to retrieve the content that is in the page of the category, so it is recommended to back up the data in the category.
Make sure to check if they are any sub-categories within the category that you plan to delete, since they will be deleted as well. If you do not want these sub-categories to be deleted, simply change the parent ID of these sub-categories to move them to other categories.