If the interface opens in Chinese, you can change the language to English via the settings menu (the icon that looks like a gear or the "Settings" tab) and then restarting the app.
Click on the .zip link for the latest version (usually tagged as "Latest") on the GitHub page. Download v2rayN zip
v2rayN typically requires the Microsoft .NET 8.0 Desktop Runtime (or newer). If the app fails to launch, you may need to download and install this from the official Microsoft website. If the interface opens in Chinese, you can