Stopping ACT scores from reaching high school?

Hello, I recently just took the October ACT this morning. During the math section, I began to feel sick and asked to go to the bathroom, so due to the lack of time and illness, I didn’t perform well on the math section. I have never taken the ACT before (only the SAT), so I had thought that similar to the SAT, I could cancel my score as long as it was before the Wednesday after the test; thus, I finished the test just to see how prepared I was. However, after leaving the test room and browsing online, I realized ACT does NOT have a score cancellation policy once you leave the test room. Since I cannot cancel, I plan on deleting my scores right after I get them, but I would not like my high school to receive them (I didn’t list any colleges to report to), mainly because I do not want it to be put on Naviance and stay there after I delete them. How do you stop your high school from receiving your score?
If I do not list a high school (aka I choose “I could not find my school code” on the registration ticket), will they somehow be able to track it down to my high school?

Thank you!

bump

Why does it matter if it goes on naviance?