On the official website of Don Bosco University Guwahati, the fees details for the session 2021-22 isn't available. On some search, I have got the 2019-20 fees structure for different course. You can download the pdf from the link provided below and you can estimate about the fees structure:

https://www.dbuniversity.ac.in/pdfs/Fees_Structure_2019.pdf

For the DBU official website, visit the link below:

https://www.dbuniversity.ac.in/

To know more about DBU visit the link below:

https://www.careers360.com/university/assam-don-bosco-university-guwahati

I hope this answer helps. All the very best for your future endeavors!