To run the program, make sure you have .NET Core 3.0 installed. You can run dotnet run to run the program. This will implicitly run dotnet restore and dotnet build before running dotnet run. Keep in mind that this will create bin/ and obj/ directories.
The easiest way to run/edit/debug this application is by using Visual Studio Code. When you open the project is VSCode, it will prompt you to add required assets to the project. This will generate a .vscode folder with launch.json and tasks.json files that allow one to debug the program.