According to my calculations he should be able to contribute up to $3,456 to a IRA. So you need to get the 1099NEC entered on Schedule C. Did he have any expenses to write off for it?
You can enter Self Employment Income into Online Deluxe or Premier but if you have any expenses you will have to upgrade to the Self Employed version. Or use any of the Desktop CD/Download programs.
How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
