I am able to run project in simulator but it doesnt archive on my Mac (OS: Catalina), neither does it build on azure devops pipeline.
While archiving on local machine it says Xamarin.IOS assemly not found(already tried the bin obj del approach).
And while building on pipeline it says The process '/Library/Frameworks/Mono.framework/Versions/5_16_0_0/bin/msbuild' failed with exit code 1
The hosted agent used by pipeline is vm image : 'macOS-10.14'.
It used run fine on vm image : 'macOS-10.13'.
Answers
Please try to build with local VS, if you can build it normally.
I found an similar issue, you can refer to it.
https://developercommunity.visualstudio.com/content/problem/742248/xamarin-ios-build-keeps-failing.html