I can share additional information about deleting transactions by batch, @PINOoo.

You can batch delete Money Received transactions like Invoices and Sales receipts. The option to delete by batch will be grayed out once you include transactions aside from Invoices, Sales receipts, Refunds, and Estimates. 

Here's how:

1. Go to the Sales menu and then proceed to the All sales menu. 
2. Click the checkboxes of the transactions you'll want to delete. 
3. Click the Batch actions dropdown and select Delete. 

Follow the steps in the following article for more information about emailing or printing multiple sales forms in QuickBooks Online. 

Let me know if you need further help deleting transactions by batch. I'm always here to assist. Have a great rest of the day!