Hi,

When you are applying for the counselling process for WBJEE, then you do not have to fill up the rank manually. When you register with all the details & documents, & then apply for the e-counselling, your rank & marks will automatically be tracked. The identity document you have provided earlier while applying for the entrance exam, may it be Aadhar Card, PAN Card, etc. will help the authorities track down your rank & marks.

You can refer to the official announcement:

https://wbjeeb.nic.in/wbjeecms/File/GetFile?FileId=60&LangId=P

Hope this helps.