No, reporting social security income does not require an upgrade. It is possible that the rest of the return combined with the social security required the upgrade.
Check out this article: What's the difference between IRS Free File Program and Free Edition? to see if you qualify for the Free File program.
If you qualify, sign in using your TurboTax username and password from the IRS Free File site powered by TurboTax,and continue with the filing.
Visit the following links for the most recent updates:
IRS: Economic Impact Payment Information Center
IRS Coronavirus Tax Relief
TurboTax Corona Virus Tax Center Updates
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