Hello Aspirant,

See it is quite difficult to tell you an exact figure of your marks because it keeps on changing every year depending upon various factors but yes we can help you with approximate figures on the basis of analysis of previous year's data. 
So If we go through the analysis of marks Vs Percentile Vs rank for JEE-Main 2021 then according to the EWS rank mentioned by you in the question your marks are expected to be in the range of 130-140.

You can check out marks Vs ranks Vs Percentile from the link given below :-
https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Note that the marks which are predicted are only the expected marks range on the basis of previous year's data so your actual marks might vary depending upon current factors.

If you are preparing for JEE-Main then I would recommend you to check the resources made by our experts to help aspirants like you in the best and smart preparation of JEE-Main :-
https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

I hope this information helps you.
Good Luck!!