You can calculate your rank in JEE Main Paper 2 using the formula:

Rank = (100-percentile)*(No. of students appeared for the examination)/100

As the no. of students appeared for Paper 2 (Jan) are around 112679, your rank will be around 21500. However as the no. of students in April changes, your rank will change according to that.

With this rank, there are less chances of getting a NIT but you may get some other architecture colleges.

To check the list of all colleges which you may get with this percentile, kindly use the link provided below:

For more information regarding the same, kindly use the B.Tech companion from the link given:

https://www.careers360.com/btech-companion

Score in CBSE exams does not affect the JEE Main Rank/ percentile in any way. However, when getting admission into a college on the basis of JEE Main, it may require you to score some minimum marks (criteria is different for different colleges) in CBSE Board exams.