Before downloading flutter setup, first download DartSDK from here
1. Download the Flutter SDK.
2. Extract the files.
3. Update the Path Variable for Windows PowerShell.
4. Confirm installed tools for running Flutter.
5. Download and install Android Studio.
Its it preferred to install Android Studio, cause provides optimal experience for editing flutter applications. Either way you can edit in command line tool. For more info you can type command in cmd
"C:\> flutter doctor "