College application questions

My dad went to trade school, so what should I put as his highest level of education on the college app.?

Also I am born outside the US, and my mom became a US citizen before I turned 18. But I have no proof that I am a US citizen; I am not even sure if I am a citizen. Should I still put that I am a citizen or not?

For the SAT scores, I do not have my scores yet so should I leave it blank where I self-report my scores?