Download the recommended .NET SDK for your operating system and install it.
By Selecting All .NET downloads you can between installers for different operating systems.
Download the latest stable build of Visual Studio Code for your operating system and install it.
Open Visual Studio Code, navigate to the "Extensions" tab and install "Ionide-fsharp"
Download the desired version of Visual Studio
When executing the installer select ".NET desktop development" under workloads and make sure "F# desktop language support" is ticked as well on the right side.
Download Visual Studio for Mac Visual Studio