@rg12
"How do I send my company file/accountant's copy? (I'm use QB online)"
If you're using QuickBooks Online, invite Your Accountant. Your accountant will have access to QuickBooks so it’s easy for you to work together.
(Left Dashboard > My Accountant > Invite (send Accountant's email).
Refer to this article for more info:
https://quickbooks.intuit.com/learn-support/en-us/accounting-topics/invite-or-remove-an-accountant/0...
Only on QuickBooks desktop, you send the company file/accountant's copy. In QB Online, there is no such thing.