Generally,To get admission into a B.Pharmacy course in Delhi or any other state with your PCB science stream in 12th, you need to check the admission deadlines of the colleges you're interested in, usually around May-June after your 12th results are out, apply online through their portals, and prepare for any required entrance exams like NEET or state-level pharmacy exams like

1.Maharashtra Common Entrance Test – Pharmacy (MHT CET)

2.The Uttar Pradesh State Entrance Examination (UPSEE)

3.Odisha Joint Entrance Examination – Pharmacy (OJEE-P)

4.Rajasthan University of Health Sciences (RUHS-P)

your admission will be based on your 12th marks and entrance exam performance, if applicable. In some colleges otherwise entrance exam is necessary for almost all b.pharmacy government colleges.