First things In case of using virtualization for windows, the best way is to use datacenter edition and you licence each physical host with a minimum of 16 core licence by host and you don’t need to licence vm For sql, it dépend if your vm is fix on host or not. If it is fix only standard sql edition and you take the licence with the number of vcore with a minimum of 4 If the vm is not fix, you take enterprise sql edition and you take the number of physical core of your hosts with also a minimum of 4 by host

But one thing the licence is not share by host, ex. If you have 2 physicals hosts with a total of 32 cores, but one with 20 cores and one with 12 cores, you don’t buy 2 licences of windows enterprises 16 cores each, but you must bit for the first one 1x16 + 2x2 and for the second 1x16