The following actions can be taken on the Certificate Status Alarm/Alert:
VMC on AWS is a managed service and hence the Renewal of the Certificate will be taken care of by the team.
For additional information see: CertificateStatusAlarm - There are certificate that expired or about to expire/Certificate Status Change Alarm Triggered on VMware vCenter Server
Impact/Risks:
There will be no impact on the environment as VMC on AWS vCenter certificates are managed on the customers behalf.