It is important to know that Image-Line does not offer an official "portable" version
If you need to use FL Studio on the go, the developer recommends these official methods: fl studio 20 zip file download portable
that runs directly from a USB or zip file without installation. Official versions of FL Studio 20 are provided as installers for Windows and macOS to ensure proper registry settings and file pathing. Official Downloads for FL Studio 20 It is important to know that Image-Line does
Downloading and Installing FL Studio 20
If budget or installation restrictions are why you sought a portable ZIP, consider legal free/open-source DAWs: consider legal free/open-source DAWs: