If your goal is to become a Bank Manager, then BCom is a better choice as it builds strong knowledge in finance, accounting, and banking, and later you can prepare for bank exams (IBPS, SBI PO) or pursue MBA in Finance. But if you aim for HR (Human Resources), then BBA is ideal since it focuses on management, communication, and leadership skills, and you can later do an MBA in HR. In short: Choose BCom - for Bank Manager path. Choose BBA - for HR career.
If you are going to clear Class 12 and wish to join Aligarh Muslim University (AMU) for BBA or BCom, you need to appear for the AMU Entrance Test (CUET-UG optional for some courses). Pass 12th with at least 50% marks in any stream. Based on AMU Entrance Test rank (or CUET score if accepted that year). Start preparing early — AMU’s BBA and BCom cutoffs are usually high due to competition.