Big Sur & app distribution

Id like to install Big Sur on my dev machine...
can I still distribute apps for the App Store on Big Sur?
if so, do I need Xcode 11 or 12.

cheers
If this is your production machine, that may not wise to use it to experiment with the first beta of a major release of OS.
Use a secondary machine or wait a little to upgrade to the formal release of MacOS.
AFAIK, as long as you're using the regular release version of Xcode, it doesn't matter which OS you're using underneath. You just can't use a beta version of Xcode to distribute apps to the Store.

As for the Big Sur beta - ouch! It's got a multitude of problems right now. I agree with @Claude31 that, unless you're really brave and adventurous to be on the cutting (ie "bleeding") edge, you might want to hold off on installing the beta.
When shipping your app to customers, all of the software involved during the build needs to be a GM version -- that includes Xcode, as well as the macOS version that Xcode is running on top of.
Big Sur & app distribution
 
 
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