TurboTax was updated after the American Rescue Plan Act became law on March 11. Therefore, if you log in, TurboTax will show you what your refund would have been had the law been in effect at the time you filed. You can compare the current federal refund with the refund when you filed. The difference is the amount the IRS will send you.
If your lower income made you eligible for new credits that you could not claim due to income limits, you can file an amended return to claim those new credits. If the amount of credit increased due to subtracting unemployment income, the IRS will make that adjustment for you.
For example, if you were ineligible for the Earned Income Tax Credit but became eligible as a result of the $10,200 unemployment subtraction, you would have to file an amended return to claim EITC. However, if you were already eligible for EITC and the unemployment subtraction gave you bigger EITC the IRS will figure that amount for you.
The IRS does not have a way to check when you will get your unemployment refund. CNET suggests getting a free IRS online transcript. See "Check your unemployment tax refund online" in Tax refund for unemployment benefits: When to expect your money and how to check.
