The rules Apple reviews every app against. Guideline 4.2 on minimum functionality rejects apps that are mostly marketing, web clippings or a collection of links.
Apple's page on review times and common rejections: at least 50% of submissions reviewed within 24 hours and 90% within 48 hours, and over 40% of unresolved issues under guideline 2.1, app completeness.
Apple's page for enrolling in the Developer Program, which you need to put an app on the App Store. It states the fee is 99 USD per membership year, shown in local currency at enrolment.
Apple's enrolment help, which states that in India enrolment is only available through the Apple Developer app, and the 99 US dollar fee in local currency.