What if I don't abide by a college score choice rules?

Will CB report to colleges that I haven’t selected all my scores in my official report or will my report look normal?
I ask this because I am a transfer student and if I don’t select score choice I am going to have to send scores form 2 years ago including sat subjects (which aren’t even required) so I am definitely going to use score choice.
The only problem is if cb will report to colleges, there is no issue with my old hs telling them because I am international so they never received them in a first place.

Sounds like you should only be applying to score-choice colleges.

I am not though, I am applying to one only, so will CB flag my report?

From CollegeBoard web site:
“Students are encouraged to follow the score-reporting requirements of each college to which they apply, but their scores are not released for admission purposes without their specific consent.”

Colleges will only see the scores you choose to send, regardless of that college’s Score Choice rules.