If you have no income to report on a 2019 tax return then there is no reason to file a 2019 tax return.
Since you are being claimed as a dependent on your parent's tax return you are not eligible for any stimulus payment.
Q. Do I still need to file a 2019 return.
That assumes you have no other income (you only say you had no paycheck). In particular, if you are a student, a portion of any scholarships you have could be taxable. But as long as the taxable amount is less than $12,200, you still do not need to file.