IPU CET

As you belong to the general category, you'll not get USLLS with this rank but you have good chances of getting Amity Law School. Also, you can surely get admission in VIPS (Vivekananda) with this rank as these three are the top 3 colleges under IP. Moreover, you can also get into CPJ and JIMS as they are also good options. I am also pursuing BBA LLB and hoping that I'll also get into the top 3 as per my rank which is 846.

You will not get admission in JIMS and Maharaja Agrasen but you can get admission in Trinity second shift in second counselling.

You will easily get VIPS.

You might get VIPS in the later rounds of the counseling i.e. sliding and spot. All the best!

As per the rank, the chances of getting into Trinity second shift are there, but you will not get any other college.

Yes, it is compulsory to submit the academic fee of Rs.40000 if you want to be eligible for the 2nd round.

Biochemical Engineering deals with the various bioreactors that are used in the manufacturing of food stuffs, pharmaceuticals and waste treatment whereas Chemical Engineering involves manufacturing of finished products using the raw materials by applying chemicals so as to change their chemical or physical composition, structure or energy content.
Check the below link for colleges-
https://www.shiksha.com/b-tech/colleges/b-tech-in-biochemical-engineering-colleges-india
For more info-
https://www.shiksha.com/b-tech/articles/comparison-between-bio-chemical-and-chemical-engineering-blogId-14204

If you are of general category, probably you will get a seat in VIPS or Amity law school. But still, you can rank USLLS as your first preference.