Hello aspirant,

First of all congratulations for your result. The NTSE 2021 cutoff for stage 2 is not yet released due to the pandemic situation. You can refer to the previous years' cutoff for Tamil Nadu for having idea how much can be the minimum score  to qualify the exam. There are records for the year 2018 in which the cutoff marks for general category was 150, for SC 122 and for ST category it was 113. Keep on checking the official site for updated notices.

Hope this helps,

All the Best!!