My son has w2s How do I add my son's income

[NewGuy]

You do not add your son's W-2s to your return.  Unless the W-2s amount to $6300, he is not required to file a return unless he wants to claim any Federal or state taxes paid.

https://www.irs.gov/publications/p501/ar02.html#en_US_2016_publink1000220702

Filing requirements for dependents

1. Your unearned income was more than $1,050.

2. Your earned income was more than $6,300.

3. Your gross income was more than the larger of—

   1. $1,050, or

   2. Your earned income (up to $5,950) plus $350.