uTorrent is a 32-bit app, which is no longer supported on the latest Mac OS X. The official recommendation is to use the web app, but if you want a uTorrent Catalina alternative, there are a few great ones to choose from. Folx is one of the best uTorrent alternatives I found in what it does. It will quickly download and upload torrent files. Its much better than the uTorrent app that I used on Mac Mojave. In my personal experience, it’s much better. That’s because the developers of Folx are dedicated to constant improvements and they actually work on this software.”]
Source: https://gbhackers.com/a-guide-to-using-utorrent-on-macos-catalina/