I got 74.46.. %tail Marks in jeemains in April and also 65% marks in state board. What I do now?

Hi, hope you are doing well.
With  74.46 percentile in JEE Mains, it's not very likely that you will be getting any NIT or very good Government colleges. However, you can try out at the state government colleges or the private engineering colleges. Your disadvantage is that your state board percentage is quite low. Most of the colleges require at least 75% of marks in boards. But some do require less.
Check which colleges you can take admission in, and try out there.
But also remember that trying out for a second time is never a bad idea. Many people try to give JEE Mains for a second time and are very successful. It totally depends on what you want.

Thank you.
Please do contact if you need further help.

You wont get any college by JEE Main because your board percentage is very low. Firstly check if you come under top 20 percentile or not. Try some other private colleges as well. If you want to take a drop for NIT or IIT, then you have to give boards again to improve your percentage.