hey!

you didn't mention you are asking about which board examination either its CBSE OR ICSE.

Well the exact date is not yet released.

Still ICSE 10th exams 2021 will be expected to be conducted in February/March 2021. And for central board of secondary education (CBSE) The examination for both Class 10 and Class 12 board exam is not yet released.

For further query feel free to ask!

Hope it helps!