The Q2 2020 Form 941 is currently unavailable in QuickBooks Online. The IRS is still preparing to ensure it's accuracy, and it will be available once the preparation is complete. Rest assured that our product team is working with its best to release it as soon as possible.
Once we've got an update about the availability of the form, one of our product team will send you an email. For now, feel free to check out this article to know the latest update of the Federal and State Forms in QuickBooks: Forms unavailable (blocked) - Federal and State Forms.
You might want to read these articles to learn more about filing 941 forms: