Greetings to you,
As per your rank in JEE Advanced 2019 and in accordance with your SC category, you are very much likely to get a seat in every branch of ISM Dhanbad except CSE. The CSE branch for SC category candidates closed at 613 category rank. But you are very much eligible for the remaining ones. Also, you can get good branches in IITs better than IIT(ISM) Dhanbad. Good luck.
Yes,you can get IIT(ism) Dhanbad according to your category rank.For better knowledge you have to see open and closing rank given in jossa link.
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According to 2018 cutoffs, with SC rank of 1012, you can get Civil engineering, Mechanical engineering, Mining engineering, Chemical engineering, Mineral engineering, Mining Machinery engineering, Engineering Physics, Electronics and Instrumentation engineering, Environmental engineering, Electronics and Communication engineering, Petroleum engineering at IIT Dhanbad.
Please note that this prediction is completely based on 2018 cutoffs. Cutoffs can vary from year to year depending upon factors like number of students appearing for the examination, number of seats available, difficulty level of the paper etc.
I hope it helps. For any further queries regarding this, ask me in the comments.