You can easily import your payment activity from Square
to QuickBooks using Transaction Pro Importer.
After downloading the transaction file from the Square application you should select an import type of sales receipt. We have a detailed article on our blog that you can read here
You will need to enable the ecommerce features and indicate that your items are in columns. Read more here
When you get to the Transaction Pro Importer mapping screen you will provide a static value
for the customer name and for each item for which you have data in your Square file. Then you will map the correct column that contains the corresponding price.