You have not mentioned whether you have any other income, or whether you will be filing jointly with a spouse. If you will be filing a joint return then all of your combined income goes on the return.
There are several kinds of disability income--we do not know what you are receiving. If your only income is Social Security disability you do not have to file a tax return unless you had tax withheld and need to seek a refund.
If you are receiving some other kind of disability benefits and have some other income, you might need to file:
Disability Income
https://ttlc.intuit.com/questions/1901145-is-disability-income-taxable
Who has to file?
It depends on the type, and the amount received.