Hello Aspirant,
It seems that you wrote an incomplete question because you have not specified your board of education so it is little bit difficult to guide you accordingly, but if considering your profile, you belongs to Uttar Pradesh and for session 2019-20, exams have been completed by UP Board as well as CBSE board and even results are also out.
I think that you are asking for session 2020-21, so till now there is no any confirm date for class 12th board exams because as of now situation are very unpredictable and nobody knows about next year. However. state board as well as CBSE board have reduced their syllabus for session 2020-21 to recover the loss of academic tenure so that from next year schedule can be normalized as earlier.
I hope this information cleared your doubts.
Good Luck!!
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