@Ahmed Alshatawi Please try to enter "edge://policy" in Edge search bar to check if this policy is applied in the target device.
Then check in Registry Editor (HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge) if "QuicAllowed" shows "0".
https://admx.help/?Category=EdgeChromium&Policy=Microsoft.Policies.Edge::QuicAllowed
Note: Non-Microsoft link, just for the reference.
If all the above setting is normal, it means that intune deploy this policy correctly. However, it seems something wrong about Edge itself. Please understand that intune just deploy policies and whether these settings work are based on their products themselves.
Given this situation, it is suggested to contact Edge support to get more help. Here is the support link:
https://support.microsoft.com/en-us/contactus
Thanks for your understanding.
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