Over the years, the cut-off varies a great deal between 115 to 160. It depends on the difficulty level of the paper set. Moreover, your focus should be on the rank rather than the score.
You should be able to obtain a higher rank than others in order to secure admission to the top 3 law schools. The cut-off for CLAT (2015) was 125 whereas for CLAT (2020) was 153. Start working in the right direction and you shall achieve it. Try scoring a 140+, as it will keep you on the safer side.