If you want show some categories from your eqwid store on different Wordpress pages, you can do this with an additional function in posts Add Store.
Here is how you can do that:
- Create a separate Wordpress page for each category (WP admin backend -> Pages).
- Click "Add store" button.
- In the popup specify the widgets you want to show on the page
- Use the "Appearance" tab to specify the default category and the categories and products layout.
Read more about the Ecwid store on wordpress