greetings anshul,

with a 21558 rank, you will not get admission in top or good IPU colleges.

you may get admission in the follwoing colleges:

• Banarsidas Chandiwalal Institute of Professional Studies
• Bhagwan Parshuram Institute of Technology
• Chanderprabhu Jain College Of Higher Studies & School of Law
• Delhi Institute Of Advanced Studies
• Delhi Institute of Rural Development
• Delhi School of Professional Studies and Research
• Gitarattan International Business School
• Mahavir Swami Institute of Technology

refer to the previous year cut-off:

https://ipuadmissions.nic.in/publicinfo/Handler/FileHandler.ashx?i=File&ii=171&iii=Y

hope this helps.

good luck