If your parents are Brazilian, you’re not a Hispanic American.
Although it is the largest country in South America, Brazil was colonized by Portugal, not Spain.
Most of its people speak Portuguese, not Spanish. The languages are similar enough that a Spanish-speaker can sometimes manage a conversation with a Portuguese-speaker, but they are not the same.
On the other hand, Brazilians are Latin Americans, because they come from a country south of the United States that speaks a Latin-based language. In that sense, you could call a Brazilian a Latino, but not a Hispanic.