No one keeps returns older than 7 years so you are out of luck. The SS administration will have your work history ... log in and get it here : https://www.ssa.gov/myaccount/?gclid=CjwKCAiAqJn9BRB0EiwAJ1SztZJNkMGthQ819EHV0Z6Q9xNb2KAqgI39jRiwllB...
File a non filer return by 11/21 here only : https://www.irs.gov/coronavirus/non-filers-enter-payment-info-here
