Go to the official website of EuroScope <https://www.euroscope.hu/wp/>.
Install stable version
In the header of the website left click on Download EuroScope button. Run the downloaded .msi file file and Install as requested.
Install beta version
To install the latest beta version, after you downloaded the stable version, in the header of the official website, left click on the Download latest beta version button. An archieve will be downloaded in your machine. Now unzip it where EuroScope is already installed.