we do not know if the disability income was taxable or not; if you had other sources of income that would require you to file; and other info needed to make a determination is lacking.
you can use this IRS website to check, click on the blue begin link.
https://www.irs.gov/help/ita/do-i-need-to-file-a-tax-return
In the case of disability pay, whether it is taxed or not usually depends on who paid for the disability insurance coverage. Perhaps your employer paid for your disability coverage, and you were covered as a fringe benefit. In that case, when you are disabled and the coverage kicks in, the benefits you receive are taxable.
However, what if you paid for your disability insurance yourself, with after-tax dollars? Many insurance companies offer disability policies, and if you buy one, it is usually out of your own pocket, which means after tax. In that case, the payments you later receive on disability are tax-free.
it is likely that if they were taxable you would have gotten either a 1099-MISC or 1099-NEC.
if you reply, don't provide personal info since this is a public forum
