Person has only Social Security and AGI of $5,029. Do they need to file a Federal return? Do not owe any taxes and are not getting a refund.
Based on the information you've provided, if the person's only income is from Social Security, it doesn't sound like they need to file a federal return.
But, please see the TurboTax FAQ "Do I need to file a federal return this year?" below for more information.