Launch Fusion 360 from the Fusion 360 Portable folder and activate it using your Autodesk account credentials.
If you have a physical installation media, such as a DVD or USB drive, you can skip to the next step. If you have downloaded the installation package, extract it to a folder on your computer. autodesk+fusion+360+portable+install
Navigate to the Fusion 360 Portable folder and run the setup.exe file. Follow the on-screen instructions to complete the installation. Launch Fusion 360 from the Fusion 360 Portable