The question seems to be whether it is common for media to interview kids with perfect scores, and also how do they find out about the score (through ACT?). The original post does not ask anything else, but comments on the fact that one kid was asked for an interview and offered to share the limelight.
In our town, local media interview kids for all kinds of things. Often it is the school that initiates this, because accomplishments by students make the schools look good 
In the short term, it is fun to be known as the kid who got perfect scores, but the reputation lingers and in the long term can be problematic. Let’s just say I speak from experience.