It's good to have you posting here, @Jill274. I'd be glad to answer that for you.
You can electronically file federal Forms W-2 with the agency at no fee. E-filing is already included in your payroll subscription. As long as you're using QuickBooks Enhanced level service, you can electronically file the W-2 form.
For QuickBooks Desktop, you can refer to this article to get further details on how the process should be done.
If you have other questions or need to clarify something with e-filing, just post them here. I'll be right here to help you figure them out! Take care!