I would not worry, it only needs to be reported on one of your income tax returns and it will most likely not be taxable.
It will not be added to your income as long as you did not receive a profit of over $250,000 and it was your primary residence for two of the last five years.
For more information on how to enter that Form 1099-S, you can review the TurboTax FAQ below:
https://ttlc.intuit.com/replies/3302480
