We can use the TLS Configuration utility to view which TLS version is enabled enabled on vCenter.

Login to the vCenter Server by using SSH and change to the shell

root@vCenter [ / ]# cd /usr/lib/vmware-TlsReconfigurator/VcTlsReconfigurator
root@vCenter [ /usr/lib/vmware-TlsReconfigurator/VcTlsReconfigurator ]# ./reconfigureVc scan

This command will display which services have TLS enabled, the version and the ports they are listen on.

Links

Scan vCenter Server for Enabled TLS Protocols
https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/vsphere-security-7-0/managing-tls-protocol-configuration-with-the-tls-reconfiguration-utility/scan-vcenter-server-for-enabled-tls-protocols.html