Direct link to download Boot Camp on a Windows. With a detailed guide on installing Boot Camp Support Software on Windows OS.
Here you can download different ISO, and DMG file files for macOS, Windows OS, and Linux. You will be also provided with any necessary tools that are required while performing virtualization on your system.
Click here to Download macOS Sonoma ISO Image for VirtualBox & VMware. Download the macOS and do the installation for free.
Click on the download link given for Free Download macOS Sonoma Full Installer PKG file (InstallAssistant.pkg) without any account.