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
https://docs.microsoft.com/en-us/azure/virtual-machines/linux/openshift-container-platform-4x
https://docs.openshift.com/aro/4/welcome/index.html
Azure Red Hat OpenShift 4 Documentation
Important
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 |