Hello Srihan

I hope you are doing good.

With reference to your query, I would glad to inform you that in BBA Course syllabus of all the subjects starts from baisc fundamentals only , you dont need to worry about the things you have missed in 11-12th commerce subjects, this course will teach you taxation ,finance,Human resource management from the basic only , if you are interested then absolutely go for it

Hope you found this answer helpful. Good luck for your future