These are public (global) addresses that are used on the Internet. A public IP address is an IP address that is used to access the Internet. Public IP addresses can be routed on the Internet, unlike private addresses.
The presence of a public IP address on your router or computer will allow you to organize your own server (VPN, FTP, WEB, etc.), remote access to your computer, video surveillance cameras, and get access to them from anywhere on the global network.
With a public IP address, you can set up any home server to publish it on the Internet: Web (HTTP), VPN (PPTP/IPSec/OpenVPN, WireGuard), media (audio/video), FTP, NAS, game server, etc.