If you click through from Schedule SE you can find the "Schedule SE Adjustments Worksheet," where you can enter the amount on Part 2, Line 4, "Other SE income  reported as income on Form 1040, line 1h"

To get an entry on line 1h, you click through to the "Wages, Salaries and Tips Worksheet" and enter the amount on Line 7 under "other earned income."

Probably easier just to do a Schedule C.  Edited to add:  And that way you get the Form 8995 for the QBI.