As tomcooks said, you can't directly add https to a DNS server address in your settings and have it work. However some DNS providers support the new standard D

As tomcooks said, you can't directly add https to a DNS server address in your settings and have it work. However some DNS providers support the new standard DNS-over-HTTPS (including Google and Cloudflare). Some also support the alternative new standard DNS-over-TLS (including Cloudflare). While support for these encryption methods support is offered by some DNS providers, your client devices may or may not support the new encryption methods. Firefox is currently implementing DNS-over-HTTPS so at least Firefox DNS requests will be soon able to use it and Google is currently beginngin to implemen it in Android. The new encryption methods are still in Draft status so expect to see adoption increase as they near completion.