Child is 5 years old, I meant I searched and found that article from university of Berkely that says :

All international students, scholars and their dependents including spouses and children present in the U.S. under F-1, F-2, J-1, or J-2 nonimmigrant status regardless of an individual's age, who are nonresidents for tax purposes, must file Form 8843. It means should file for 5 years child form 8843.

Their country does not have any tax treaty and totalization with the U.S. that is why I could not find any area of Sch C to checkmark exempt from SE tax.

"Thanks again for the ongoing help. I really appreciate it!"