Did you print and mail it yourself? TurboTax does not print and mail it for you.
The IRS is not currently processing mailed returns and has not been for some time. Your return has apparently not been opened yet for them to start processing it. The IRS requests that you do not efile a return after you have already submitted a mailed return. This will only complicate processing and could delay your return even more.
You can start tracking your return after they start processing it.
See these Q&As for more info: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions
