I'm not sure what you're asking for. The store page (if that's what you're talking about) is created automatically by Exchange. You'll find it at yourdomainname.com/store. You can change the slug by going into Exchange > Settings > Pages.
There, you can also change the page type from Exchange to WordPress. This will allow you to select the page you'd like the products to appear on and give you a shortcode to paste into that page.
If that's not what you were asking for or if you have additional questions, just let us know.