Yes, you are taxed at 15.3 percent of your profit. You can see the calculations on Schedule SE.
The new filing requirements for a dependent in 2019:
Single dependents—under age 65
You must file a return if any of the following apply.
1. Your unearned income was more than $1,100.
2. Your earned income was more than $12,200.
3. Your gross income was more than the larger of— a. $1,100, or b. Your earned income (up to $11,850) plus $350
@Irina
