Is back to school program applicable for Indian customers too.because I bought iPad Pro. But doesn’t get offers

The offer is available only in the Indian Education store, once you have verified your student status in an included institution via UniDays.

See here: link-> Back to School: Education Discounts - Apple - Education - Apple (IN)

Offers may vary from region to region. Not all offers are available in all areas. Access to edu offers outside of the US requires going through Unidays.