Hii,

NTSE stage 2 admit cards wil be released around 15-20 days before the exam. The exam was about to conduct on May 10, 2020. But it has been postponed. The new date of NTSE 2020 exam to be out soon. So stay tuned to get NTSE admit card updates.

All the best!!

You haven't mentioned the State you are enquiring about. Neverthless, as of now as the lockdown extends until May 3rd, it is highly unlikely that any admit cards would be released before that. The exams might be postponed as well because now Corona Virus is also being spread through community transmission which means the chances of being prone to the virus are more. Until the virus has been eradicated, the exam might not be conducted.