Will all Higher Secondery students get Auto-Pass in 2021 from Westbengal Board ?
HS 2020 has been auto pass mode. But the present situation don't implies anything like that. Starting from Entrance Exams to Job exams are conducted as usual. So there is a probability of having offline exams. Don't bother with such and keep studying. Else you will face problems if exams are conducted.
I hope my answer helps. All the very best for your future endeavors!