1. How to show product categories
To show product categories in header, navigate to Appearance > Customize > WooCommerce > Shop Catalog
2. How to add product categories icons
Go to the Products -> Categories and upload icon image or svg icon in "Image (icon) for categories navigation on the shop page" section. Also you can upload icon for light color scheme of header in "Image (icon) for categories navigation on the shop page (Light Page Title Color Scheme)" section.
