JEE mains 2019 cutoff will be released by National Testing Agency(NTA) shortly.JEE Main 2019 cut off will be published category-wise. According to latest reports,JEE Main aspirants securing around 70 percentile will likely qualify for the next stage of exam.According to me,the expected cutoff for 2019 will be for General(80-86),OBC(47-52),SC(31-35) and ST(28-33).As you are from SC category and with 92 marks you can get a very good which with which you will be eligible to get an NIT.After the result of  JEE mains,you can choice filling for all the NITs in  which you want to take admission.You can get a good NIT with your rank.