Hello,
To set Automatic Updates detection frequency setting with Group Policy, navigate to Computer Configuration\Administrative Templates\Windows Components\Windows Update\Automatic Updates detection frequency.
If the setting is set to Enabled, Windows will check for available updates at the specified interval. If the setting is set to Disabled or Not Configured, Windows will check for available updates at the default interval of 22 hours.
The exact wait time is determined by using the hours specified here minus zero to twenty percent of the hours specified. For example, if this policy is used to specify a 20-hour detection frequency, then all clients to which this policy is applied will check for updates anywhere between 16 to 20 hours.
Manage additional Windows Update settings - Windows Deployment | Microsoft Learn
Best regards,
Wesley