Hello student as you've mentioned you've scored 5 marks in jee main then as per our marks vs percentile chart your percentile will be around 4.7540662201048.

Cut off vary every year on various factors like level of questions in the examination total number of applicants and seats offered.

You can use jee main college predictor -

For more details refer to the link mentioned below - https://engineering.careers360.com/articles/jee-main-marks-vs-percentile/amp

Feel free to comment if you've any doubt

Good luck