It can take several minutes for the remediated resource to show up as healthy after the remediation is complete. How long have you waited?
https://docs.microsoft.com/en-us/azure/security-center/security-center-remediate-recommendations
Did you receive a notification that the remediation succeeded?
Please wait a few minutes and try logging out and logging back into the tenant to see if the remediation appears.
If it still does not show, feel free to reach out to me at AzCommunity@microsoft.com and share screenshots of your notifications so we can troubleshoot.
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