Don't expect to know all the results on Election Night.
The results of the 2020 election are still not all in. States have different methods and timing for counting votes and accepting ballots sent by mail.
According to the ACLU
Final results will not come in on election night. That's okay. Voting by mail is one of the safest ways for many to cast their ballot this year due to COVID-19. But processing these ballots takes more time – and many states don't start processing the ballots until Election Day itself or until the ballot is received, which may be after Election Day. Election night returns have always been mere projections, but this year especially, we need to wait for the final results. Take a breath, and remember counting every vote with accuracy is far more important to our country's future than rushing the results.
Here are some good articles about the timing of election results:
You can follow The Election Results for DuPage County.