I can see there are lots of different coaching center and teachers in EduMple so How do I know which one is good.

You should take demo class bache them you can decide bache.

Do I need foundation if I want to clear NEET

Yes 

Live kab start hogi

You can join my live class for science from 15 

2+2

4

On which sites can I get CBSE video lectures of class 10?

best place is only youtube for this purpose 

How to score above 85 percent in 10th class in CBSE?

if you want achieve 85 % then you should make your strategy regarding your weak subjects so that you can tackle them smartly for this purpose firstly make friendly time table which can provide you regularity as well as consistency after that you should revise those portion repeatedly which will be important for your syllabus and also you can apply on your weak subject so that you can gain more knowledge and self confidence.

  1. - Revision.
  2. focus on your doubt clearance with the help of your school teacher or tuition teacher.
  3. More practice of your chapter exercise and any  reference book questions  Exercise.
  4. Take self test with integrated mind.
  5. join any test series regarding your board which will provide you experience and also boost your speed (Time Managements)