I don´t visualize the categories

-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.4.8

I have a problem. I created a homepage for categories and I visualize only those products.

Hi,

You want to edit your menu item via the Joomla menu manager.
There, under the "Products options" tab, check the "sub element filter" setting.
You need to set it to "all sub elements" if you want to display the products of the current category as well as the products of the sub categories of the current category.