After you file

I understand they said that, but there is nothing on the website stating that which is why I am confused and asking questions. How are they going to take care of it? How do I know what I am going to get back if I don't file an amend to make sure it is correct? What is the time line for waiting on the refund? Like there is nothing on the IRS website that I can find other then "If you have already filed your 2020 Form 1040 or 1040-SR, you should not file an amended return at this time. The IRS will issue additional guidance as soon as possible." So I am just looking for answers/ guidance is all.