All your Square transactions will be download automatically once sync your square app in QuickBooks. It will be posted under the Sales or Expenses tab.
Once the transactions exist, all you need to do is to match the downloaded transactions.
I'm adding these articles for reference:
- Sync Square with QuickBooks Online
- Record and make Bank Deposits in QuickBooks Online
- Add transactions to account registers in QuickBooks Online
Should you have more questions about Sync Square with QuickBooks Online or recording the transactions, please let me know. I'm just a few clicks away to help you some more. Stay safe!