No selection for Red Hat Enterprise Linux 9 is available in vSphere 7.0 U2 & earlier during the process of creating a virtual machine.
On VMware vSphere 7.0U3 and later, please choose Red Hat Enterprise Linux 9 as the guest operating system only in Virtual Machines where the user selects or upgrades the virtual hardware version to 18 or later.
In all other cases, select Red Hat Enterprise Linux 8 as the Guest OS instead.