Hello,
After Class 12th from PCB stream, various courses are available for students such as -
MBBS
BDS
Bachelor of Ayurvedic Medicine and Surgery - BAMS
Bachelor of Homeopathic Medicine and Surgery - BHMS
Bachelor of Unani Medicine and Surgery - BUMS
Bachelor of Physiotherapy - B.Pth or BPT
Bachelor of Veterinary Science - B.VSc
Bachelor of Naturopathy and Yoga - BNYS
Bachelor of Siddha Medicine and Surgery - BSMS
B.Sc (Hons) in Physics, Chemistry, Zoology, Botany.

You should opt for any of the course according to your interest and skills.
Good Luck!