Assuming you are a All India Quota Aspirant, for securing a seat in NIT Warangal, being from SC Category, you need to secure a SC Rank of Atleast 5.5-6.5k. With a score of 120 in JEE Main, you will surely crack NIT Warangal in a Good Branch, with a much higher SC rank and a corresponding CRL, irrespective of the fact whether you are an All India Quota or Home State Student.

For more information about NIT Warangal Cutoff do follow the link below

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-warangal