Nowadays competition for NIT and IIT are really tough due to which cutoffs and closing ranks are rising by leaps and bounds. Coming back to your question, As you said you have secured a rank of 4739 in ST female catagory. I must mention that with this rank I don't think you will get Mechanical Engineering in NIT Rourkela. Since its last year's cutoff for ST female category in home state quota was 2711.
Nevertheless, you can check the requirements for NIT Rourkela through this link: https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-rourkela#JEE-Main-Cutoff-2020-for-NIT-Rourkela
In order to clarify your doubts about your chances in other NIT and its cutoffs and closing ranks, you may refer to this link: https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits
Also you can go for college predictor tool to know your branch and college based on your respective rank: https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
Hope this information may help you.
All the best!!!
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