I saw in 2019 that enthusiasm does not directly translate to votes. Bernier was touring Ontario and his events were filled to the brim with people. online, every other comment you saw was supporting Bernier. Videos on youtube featuring Bernier were thousands of views ahead of the ones with Trudeau or Scheer. I even remember the chat of the CBC livestream for that election was shut down because of the PPC spam.
If I were a Biden supporter I'd be quite worried about the levels to which Trump supporters are showing out for his events. But this is a warning, I learned this lesson myself in 2019, enthusiasm does not create votes and may not even be indicative of them.
Naturally, there are other metrics where we see that Trump may have a huge lead over Biden, namely the polls asking who your friends are voting for which all trend for a conclusive Trump victory.