Welcome to the Community, @elenalb.

I'll help you run a report that will show the contractor list for those who are eligible with 1099 and their payments in QuickBooks Online.

Here's how:

1. Go to Payroll then Contractors.
2. Select Prepare 1099 select Confirm info and get started until you get to the window called Review Receiptants and Payments totals.
3. Select the dropdown ▼ to choose Run reports of all vendor payments.
4. From the dropdown for period, choose Last year.

You can also run a Transaction Detail report.

Here is an article to learn more about running 1099 reports in QuickBooks Online: Create 1099 reports in QuickBooks.

For future reference, you can also read this article that contains the year-end checklist in QuickBooks: Year-end guide for QuickBooks Online.

Feel free to comment below if you need further assistance in running reports in QuickBooks Online. I'm always here to help. Have a great day.