Hi there, Alysia69.

You can open the Open Invoices report in QuickBooks Online. This will give you a list of all invoices that are grouped together per client. Here's how:

1. Go to the Reports menu and type in the name of the report in the Search bar. You can also see it under the Who owes you section if you scroll-down a little bit in the list of reports.
2. Change the date of the report in the Report period section to the desired month. 
3. Use Custom if you want to use a specific date.
4. Click Run report. 

Let me also share these articles for more reference and additional guidance:

• Reports Included in Your QuickBooks Online Subscription
• Customize Reports in QuickBooks Online
• Common Custom Reports in QuickBooks Online

The Community is always here if you need anything else.