I can't find anything about it.....
While there's no single tutorial which cover all of them, you could find tutorial which only do one of those.
- Download Tor expert bundle from https://www.torproject.org/download/tor/ and then follow this tutorial, https://superuser.com/a/1631196 to setup Tor as Windows service.
- Configure Bitcoin Core to use Tor with this guide, https://en.bitcoin.it/wiki/Setting_up_a_Tor_hidden_service#Windows.
- As for setup/configure Electrs, i couldn't find any guide for Windows. So your current choice is only follow @nc50lc suggestion.
But IMO it's more convenient to do this either on Linux-based OS or WSL (if you prefer to continue using Windows).