Hello,

As of now the official notification of BHU and Allahabad University isn't released yet though it's expected that application form may get out by this month, for Delhi University application form is to get released on 15th July, you can stay updated at our page of respective universities regarding admission details as follows-

Allahabad University - https://www.careers360.com/exams/allahabad-university-entrance-exam

Banaras Hindu University - https://university.careers360.com/articles/bhu-uet-application-form

Delhi University - https://university.careers360.com/articles/du-application-form

You will find the complete information related to admission procedure in the above provided links, if you still want to know anything else you can mention the same in the comment box below.