I have no dependents and my only income is survivor benefits social security , do I need to file a return?

[DoninGA]

If the Social Security benefits are the Only income to be reported on the tax return, then there is no reason or need to file a tax return.

[Critter-3]

Unless you had "Obamacare" insurance thru the ACA marketplace  and received a 1095-A  you have no reason to file a return.