The installation model for OCP 4.x is different than 3.x and there are no Azure Resource Manager templates available for deploying OCP 4.x in Azure
Azure Red Hat OpenShift 4 Documentation
Azure Red Hat OpenShift is supported by Red Hat and Microsoft. As of February 2021, the documentation will be hosted by Microsoft and Red Hat as outlined below.
|Microsoft Azure documentation||Red Hat OpenShift documentation|
|Overview of Azure Red Hat OpenShift Creating a cluster Getting support How-to guides and tutorials Azure CLI reference||Overview of OpenShift architecture Release Notes Developing on OpenShift Managing your cluster|