USA

Hi Avi,
Medical studies in US starts only after you complete a Bachelors degree lasting for four years in a relevant field. Post your Bachelors degree you must clear the MCAT which stands for Medical College Admissions Test. Medical study in USA is a 4 year course. Thereafter comes the residency programs which might range from three to eight years. If you are planing to pursue your medical studies in US, take the SAT and enroll into a BS program firstly.
There is no undergraduate dental degree in the United States, hence you must complete a Bachelors degree in a relevant field and comprising of dental curriculum. Dental school takes a minimum of four academic years and will lead to either Doctor of Dental Surgery (DDS) or Doctor of Dental Medicine (DDM).
Good luck.

Hello Kishor,
Benefits of a STEM education:
1. It helps you stay current.
In a technology-based society, technology is forever changing. Its also used in almost every aspect of our lives. As work places change with updated software, and office equipment and machinery become more advanced, STEM knowledge is vital. Keeping up with technology, not the Kardashians, is incredibly important.
2. It allows you to be innovative.
Someone created an app that allows you to take a picture of a piece of clothing and finds similar looks throughout the web.
Just think of the latest device you have in your hand or at the top of your wish list. STEM helps to transform new ideas into the best inventions.
3. It helps you make a difference.
Building that shelter, finding that cure, inventing the best way for people to communicate, or helping people overcome financial obstacles makes a huge difference and with a STEM education, you can make that happen.
4. It fosters and benefits from creativity
5. It can get you a job in the beauty industry.
6. It promotes equality in education.
7. It prepares you for a college curriculum.
8. It can land you a better job within the fashion industry.
9. It is a confidence booster.
10. It gives you a higher income.
STEM-related jobs can be financially rewarding, which is evident when you look at starting salaries in some popular STEM careers:
Biomedical engineers, $77,400
Financial examiners, $70,930
Medical scientists, except epidemiologists, $72,590

It is extremely tough. You must clear the licensure exams first of all. Since your degree is from India you must get your degree evaluated and check if it is equivalent to a UK or US degree. To work in USA, you must clear National Association of Boards of Pharmacy's Foreign Pharmacy Graduate Examination. It is however tough for international students without a degree from US itself to get a job. Similarly in UK, obtaining work permit is very hard now. To work in UK check the Overseas Pharmacist Assessment Programme, you must enrol into this program before registering yourself as a pharmacist.
Here, take a look:
http://www.pharmacyregulation.org/education/pharmacist/overseas-pharmacists-assessment-programme
Please contact the concerned officials for more information.