Hello Lakshmi,

To get colleges through JEE Mains scores , first you need to have cleared the required cutoff as per your category in JEE Mains. Below I have provided 2019 JEE Mains cutoff (percentile) category wise - 

• CRL : 89.75
• GEN-EWS : 78.21
• OBC-NCL : 74.31
• SC : 54.01
• ST : 44.44
• PwD : 0.11

Now if you have cleared the cutoff as per your category, then you are eligible to apply for the colleges those who accept JEE Mains score. But which college will you get that is hard to say. To get colleges like NITs,IIITs or GFTIs you need to attend the JoSAA counselling. On the basis of your JEE score you will be allotted college through JoSAA. Now , some of the colleges may accept JEE Main score but they dont participate in JoSAA counselling. In that case you have to attend their respecteive counselling proccesses. There are total 44 colleges in Karnataka those who accept JEE Main score. I have provided a list of some of the colleges other than NITs where you can apply - 

• Bangalore Institute of Technology
• Dr. Ambedkar Institute of Technology
• Presidency University
• CMR Institute of Technology
• ACS College of Engineering
• Mangalore Institute of Technology and Engineering
• Central University of Karnataka

You can go through this link and checkout the list of all the colleges in Karnataka accepting JEE Main score : https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-karnataka-accepting-jee-main

Hope you get your choice of college. Good Luck !!!!