The transcripts for the filed 2020 tax return will only show the taxes paid, not the exclusion amount if you filed before the exclusion was available on a tax return.
Go to this IRS website for unemployment compensation exclusion refund information - https://www.irs.gov/newsroom/irs-begins-correcting-tax-returns-for-unemployment-compensation-income-exclusion-periodic-payments-to-be-made-may-through-summer