My son, too has dual credit courses with no status ever being reflected on the College Transcript part of status page. Apparently that is for post high school college students.
I had a conversation with Admissions in January about updating the files. They told me that the whole file does NOT go before the Admission Board each time you send something in.........some updates, such as ACT, CFA, etc which might mean a change to a candidate's whole person score can be figured by the staff.......they are probably done on a scale: For eg. an ACT of 26 gets so many WCS points, 30 gets so many, etc.
Now, as to when it should show up on your page........they are slammed now. If you have a question, call them, they are most happy to answer. My son updated his CFA before Christmas and, this is absolutely true, his CFA status updated on the web page ON CHRISTMAS DAY!
As to how to update, you just mail stuff in! Of course, SAT or ACT are sent by the testing authority. You might call Admissions (better: have candidate call!), ask to speak to your regional coordinator and see if updates need to be coded on the envelope any certain way to expedite or make the process easier on USNA's end.