Before you request early access, let's do a quick check for a few things you will need to set up Spatial.
A dedicated macOS system to compute Spatial audio. This system will be connected to a multichannel audio interface, amplifier(s) and speakers. (macOS Mojave or later)
Your main tool to manage your account and set up your space using your iOS device (iOS 14 or later).
A second macOS system to create immersive soundscapes. (macOS Mojave or later)