NTA hasn't released the qualifying cut offs yet. In 2019, the cut off for General Category was 78,21. But cut offs change every year depending on various factors. But with 128 marks, your percentile is approximately 42. So you may have to appear for April session to qualify in JEE Mains. Your rank can be predicted by using the formula, (100-your total percentile)*869010/100. In your case, your approximate rank would be 504025 . Let's say the number of candidates for April exam increased to 12,00,000 then your final rank shall be (100 - your total score) X 12,00,000/100.