The Center for Information Technology recommends that all Apple Mac users wait to upgrade to macOS Big Sur until early February, or until CIT releases an upgrade advisory. In general, it is a good idea to wait some time after any OS release for Apple and software developers to find major issues with an new OS.
As has been reported in the news recently, some Mac users have had devastating results from upgrading to Big Sur. This also occurred with macOS Catalina, Mojave, and many other prior macOS releases. Apple generally resolves these issues in their second and third major updates following a new OS release, typically in December in January. Likewise, software vendors (Microsoft, IBM, Zoom, etc.) also tend to resolve major issues with their software on the new OS, or convey expected resolution times, within the first few months of a new OS release.
If you have questions concerning any OS or software upgrade, open a ticket via the CIT Tech Support Portal.