how long is I’m going to get my tax return back if I mailed it to IRS

[CatinaT1]

Once your return is filed, TurboTax has no control over the processing or the timing when the IRS/State releases your refund. 

The IRS states that most federal tax refunds are issued within 21 days of acceptance, however, some may take longer if they require additional review. Also, by law, the IRS cannot issue EITC or ACTC refunds before mid-February. This applies to your entire refund, not just the portion related to those specific credits.

Here are a few FAQs to help you track your refund:
When will I get my federal tax refund?
How do I track my state refund?
Why does Where's My Refund say "approved" but TurboTax still says "accepted"?

Why do some refunds take longer than others?

What if my IRS refund is taking longer than 21 days?

[DoninGA]

It will take at least 4 weeks after mailing before the federal tax refund status will be available on the IRS website - https://www.irs.gov/refunds

Once a tax return has been Accepted by the IRS or a State, TurboTax receives no further information concerning the tax return or the status of any tax refund.

After the tax return has been Accepted by the IRS (meaning only that they received the return) it will be in the Processing mode until the tax refund has been Approved and then an Issue Date will be available on the IRS website.

[Mike9241]

it will take longer than the average 21 days. It sits in a mailbag so the IRS will not even know it has it until that bag is opened, in the order received,  and it starts processing your return.  Figure it will take 6 to 12 weeks to get your refund.  That assumes the IRS finds no issues.