According to Gallup, concerning the 2020 election:
The AP VoteCast survey shows that 81% of White evangelical Protestant
voters went for Trump this year, compared with 18% who voted for
Biden. The Edison exit polls estimate that 76% of White evangelicals
voted for Trump, 24% for Biden.
These are nationwide exit polls, asking a sample of voters who they voted for.
Ballot secrecy of the actual election results most likely prevents us from knowing the actual raw data, as the ballots cast in the election don't ask about religion.
For comparison, using the link from the question: Pew research for 2016 puts White Evangelical support in that previous election at 81%, citing CNN.com and NBCnews.com. Keeping in mind we're comparing across different polling methodologies, these numbers suggest somewhere between a 0% to 5% drop in support compared to 2016.
As for breakdown by state for 2020, Washington Post has exit poll data that list white evangelical support for several states, although the list is not exhaustive, and the information requires a paid subscription to access.