Apple does not provide a standalone direct download link for Boot Camp Support Software 6.1. Instead, you must download the drivers using the Boot Camp Assistant on your Mac. This tool ensures you get the specific drivers compatible with your Mac's hardware. How to Download Drivers for Windows 11
I have found a download page here: https://support.apple.com/downloads/boot-camp. there's no link to a "Boot Camp Installer" Apple Support Community
Format a USB Drive: Use a drive with at least 16GB. Open Disk Utility, select the drive, and erase it using the MS-DOS (FAT) format and Master Boot Record scheme.
Even though Windows 11 is not officially supported on Intel Macs via Boot Camp, you can still obtain the 6.1 drivers following these steps:
: It fetches the drivers directly from Apple's servers. You can run it on Windows (as administrator) to automatically detect your model and download the relevant Boot Camp 6.x package. 3. Updating Existing Drivers
C. The "Apple Silicon" Problem (M1/M2/M3)
If your Mac has an Apple Silicon chip, Boot Camp is not supported. You cannot install Windows natively via Boot Camp on these machines. Searching for a Boot Camp download link for these machines is futile.
Downloading Windows 11
Direct Download Link for Windows 11