Hii!
If you don't feel interested towards studying mathematics after class 12th, you can go for any of the vast options available to build a career in.
You can either choose to go with the Medical field as career, or choose a completely different career apart from Science.
The various career options are-
MBBS, BDS, BHMS, BAMS, Agriculture, forensics, pathology, research, BSc, paramedical, management, law, BBA, mass media, journalism, teaching etc.,
Hope this helps.
Good luck!