Running flutter doctor is recommended in their "Getting Started" page to check the sanity of the install.
But I kept getting the same "license status unknown" error after multiple installs /uninstalls in various order.
Their GitHub issues page has this issue as closed.
If this is the state of a simple install I dread to venture any further into actual development.
This will be a complete waste of developer's time and resources.
I am merely sharing my experience. Do not waste your time trying the flutter / stutter / sputter.