Hi dear,

You have scored 96.36 percentile in JEE main that means your rank should be around 31631. You can also calculate your rank as

Rank=(100-your percentile)×869010÷100

You have not mentioned your category and home state as cutoff depends on these factors. If you belong from home state then you have a chance and if you belong from other state you must have some category in order to get CIVIL engineering in NIT surat. You can check cutoff of last year here

https://www.google.co.in/url?q=https://engineering.careers360.com/articles/jee-main-cutoff-for-svnit-surat&sa=U&ved=2ahUKEwjMnOS8ntrnAhUw73MBHX_CBSYQFjACegQICRAB&usg=AOvVaw1y-A8fFZgCmh_AXtv02Khk

Hope it helps.