What kind of 1099? For unemployment? You may be able to log into your state website and get it. A lot of states aren't mailing them anymore.
Then Even if Turbo Tax lets you submit your return they will just hold all the returns until the IRS opens filing on Feb 12, 2021. So there is no hurry. And a lot of people who file early find out they have to amend later like when they get their actual W2 and 1099 forms. Or they get more forms than they were expecting.
