Comment 9 for bug 1956787

For the server, the nfs-server.service service should suffice:

 nfs-server.service
    If enabled, nfs service is started together with dependencies
    such as mountd, statd, rpc.idmapd
    This is a "service" file rather than a "target" (which is the
    normal grouping construct) so that
        systemctl start nfs-server
    can work (if no type is given, ".service" is assumed).

That being said, I quickly tried on a focal vm and after enabling nfs-server.service, and even rebooting, statd isn't running. I'll dig in.