I have executed a suite of tests on Unit Test bundle from Xcode with a code coverage option enabled.
Question: Where are located a coverage result files on my computer?
You can find xcresult containing Xcode Test coverage of your project DerivedData
For Example
/Users/*****/Library/Developer/Xcode/DerivedData/********/Logs/Test/Test-YOUR-PROJECT-NAME-2020.06.08_16-41-38-+0900.xcresult