Which is the best course after class 10

It depends your area of interests. First exercise to determine area of interest would be by evaluating your likes, dislikes, strengths, and weakness.

Below are few courses to help you chose what suits you best:

1. 
   

   Arts includes History,Geography, Economics, Political Science Hindi, sanskrit and English.

   
   


2. 
   

   Commerce includes Accountancy, Business Studies and Economics

   
   


3. 
   

   Science includes Math, Physics, Chemistry and Computer sc. or Biology

   
   


4. 
   

   Diploma courses includes Engineering, Hotel Management, Leather Technology, Textile Designing, Medical laboratary, Social Services

   
   


5. 
   

   Industrial Training Institutes (ITIs) provide training in technical field.

   
   


6. 
   

   Indian Army

   
   


7. 
   

   Police Force

   
   

helpful link:
https://www.quora.com/What-are-the-best-option-for-career-after-10th/answer/Subhabrata-Mondal-3?srid=4nf5

Depending on your interest first of all you fixed one goal in your mind

Choose your area of interest first and move in that direction one step at a time. Be it science, commerce or arts.
However, your career options are more vast if you take the science or commerce stream as multiple career opportunities open up. But if you have genuine interest in a certain field, you can proceed in that direction too and take up specific courses in that direction like sports or music to hone your skills.
But, follow your heart more than your mind and you shall go a long way