Dear Nimit,
In 2017 the last candidate from SC category secured a seat in DU LLB with score of 168 according to DU LLB Expected Cutoff for 2018 120-130 marks will be cutoff marks for SC candidates this time. As you have scored 165 which is more than enough from expected required marks, your chances of getting a seat is very good but which center it telling this will be a little tough. Check the list here ( http://du.ac.in/entresults/LLB-231.pdf ), if you are among top 120 students of SC category then you can get CLC. I hope it helps!Best of luck!