Your question seems to indicate you have a Form 1099-R because you had a required minimum distribution (RMD) from your retirement plan. And/or you know you need to take those distributions. Contact your plan administrator holding the funds to begin the process since you turned 73.
IRS Rule: Required Minimum Distributions (RMDs) are minimum amounts that IRA and retirement plan account owners generally must withdraw annually starting with the year they reach age 73.
TurboTax will ask you questions about whether this was an RMD so be sure to answer that it is.
You'll get a Form 1099-R if you received $10 or more from a retirement plan. You're required to report a 1099-R on your tax return, even if the distribution isn't taxable.
You can import or upload your 1099-R, or manually enter the information yourself.