Where is my money from my invoices going to

I am going to guess what you mean by your question. If a person pays their invoice online, or if you receive a payment manually, the money probably ends up in your checking account, or in Undeposited Funds.

Hello there.

I'll provide the proper or the usual flow of your invoices in QuickBooks Online (QBO). 

Firstly, we will open the invoice and click Receive payment.

Then, QuickBooks routes you to the Receive payment page, where you enter the payment details. Watch out for the Deposit to the field. You'll want to choose your checking account to directly post the payment there or use Undeposited Funds so you can deposit the transaction later on.

If you've selected Undeposited Funds in the Deposit to field, deposit the payment using the steps below. Do this after endorsing the actual check to your bank.

1. Click +New.
2. Choose Bank deposit under OTHER.
3. On the Bank Deposit page, select the checking account in the Account field.
4. Select the payment transaction to be deposited, and then Save and close.
    

You might also want to check out this article to guide you in customizing your transactions: Customize invoices, estimates, and sales receipts in QuickBooks Online

Additionally, I've added this page to learn more about customer statements. It will allow you to summarize your customer's invoices, payments, credits, and outstanding balances. See this guide for more information: Create and send customer statements in QuickBooks Online.
 

Visit here again if you have other questions or concerns about QuickBooks. I'm always here to lend a hand.