Use the Tailscale IP in Remote Desktop Connection.
(No password, no keys – works via Tailscale’s ACLs.)
Repeat the installation and tailscale up on any other device, using (the same Google/Microsoft/etc. account). All devices will automatically appear in your tailnet.
\\100.64.0.10\share on Windows, or smb://100.64.0.10 on macOS/Linux.