After completing your BCom, you can try for private banks by filling their application from their official website. Simultaneously, keep appearing for government banking exams such as IBPS PO, SBI PO etc. You need to prepare first for these exams. Then appear for it. After completing BCom, there are not many openings. Most of the BCom gradutes opt for higher studies like MBA, or Chartered Accountancy or Company Secretary, Financial Analyst, Digital Marketer courses. If you wish to go for further studies you can opt for course of your choice. Or else, you can try searching banking, railway, SSC CHSL jobs.