Can you tell me a little bit more about what you're looking for?
If you go to http://square.com/receipt customers can look up receipts for purchases they've made.
In your Square Dashboard, you can find your Customer Directory and, with Premium Profiles in Customer Engagement Pro, see customers' full transaction history. Here's an article on Premium Profiles: https://squareup.com/help/us/en/article/5498-manage-your-customer-directory-online
