Hello,

Generally the eligibility criteria for Bachelor of Pharmacy candidates need to have passed 10+2 from a recognized board  with Physics, Chemistry, Maths/Biology,English securing with 50% or above aggregatedepending on the norms of university

Admission process varies among universities, some conduct entrance exams such as

MET by Manipal Academy of Higher Education,
PUCET by Punjab University,
BITSAT

there are also state level exams such as
WBJEE/KCET/MHT CET/KEAM/AP EAMCET/TS EAMCET/ UPSEE/OJEE etc, in Jamia Hamdard(Delhi) NEET scores are accepted for BPharm admission, while for others it's based on the merit of the qualifying examination.

Some of the best universities for BPharm are

Delhi Institute of Pharmaceutical Sciences and Research, New Delhi
Institute of Chemical Technology, Mumbai
Jamia Hamdard University, Delhi
Institute of Medical Sciences(BHU)
Manipal College of Pharmaceutical Sciences
JSS College of Pharmacy, Mysore
Poona College of Pharmacy, Bharathi Vidyapeeth University
Bombay College of Pharmacy, Mumbai
Jadavpur University, Kolkata

To know more details regarding BPharm Colleges, visit at https://pharmacy.careers360.com/colleges/list-of-bpharma-colleges-in-india

You haven't mentioned much details like you're preparing for entrance exam of which college, but generally the syllabus is based on 10+2 level, hence go through NCERT books regarding this, also supplement with other essential study materials for practice purpose, go through previous year paper, apply mock tests on regular basis, you can also search our site for  detailed information regarding entrance exam preparation tips, here I have just mentioned a general overview of how to go about in brief.