I want to become a best mathematician which course is best for me bsc honour or bsc general
If you want to have in-depth knowledge of mathematics the best option is always to go with BSc(Hons) as you will study the subject in more detailed manner, also after BSc(Hons) you can appear for IIT JAM it's one of the top level exams for admission in post-graduation courses, and you can also further pursue PhD if you're interested in academia, you can also teach at university level, hence doing major in mathematics is a great option, also apart from teaching and research, and other government exams you can also apply for banking exams as some of the posts have specific criteria for which you can also apply, hence it opens an avenue in broader perspective when it comes to future opportunities in terms of knowledge, experience and workwise.
In general course the curiculum is too basic.
I hope my answer helps. All the very best for your future endeavors!