Since you have not mentioned your category so considering it as General or Open category and your Home state as Tamil Nadu as well as assuming NIT Trichy to be your target.

As we go through the latest cut-off of 2020 then it shows that the closing rank for NIT Trichy was 615 for B.Arch in NIT Trichy under Home state quota for Open category or General category. Now to secure such rank you should have your JEE-Main 2021 paper 2 score at least 350-360 marks out of 400.

You can check out the latest cut-offs from the link given below :-

https://josaa.nic.in/Result/Result/currentorcr.aspx

Note that the above prediction is made on the basis of latest cut-offs available on official website of JOSAA or CSAB and the cut-offs are bound to change every year depending upon various factors such as the number of candidates appearing in an examination, the number of candidates qualifying an examination, difficulty level of the paper, and so on.

If you are preparing for JEE-Main 2021 or 2022 then I would recommend you to check the resources made by our experts to help aspirants like you in the best and smart preparation of JEE-Main 2021 or 2022 :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

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