Every computer has an IP address:
a unique string of numbers separated by periods that identifies each computer using the Internet Protocol to communicate over a network.
for example when I type in whatismyipaddress.com in the address bar this information is available for anyone to see:
IP:146.88.50.153
Decimal:2455253657
Hostname:bb_dyn_pb-146-88-50-153.violin.co.th
ASN:132280
ISP:Symphony Internet Service Provider
Organization:Symphony Communication PLC. Services:None detected Type:Broadband
Assignment:Static IP
Blacklist: Blacklist Check

Geolocation Information

Continent:Asia
Country:Thailand
State/Region:Bangkok
City:Bangkok
Latitude: 13.7083 (13° 42′ 29.88″ N)
Longitude: 100.4562 (100° 27′ 22.32″ E)
Postal Code:10110
Don't want this known? Hide your IP details
Location not accurate? Update your location

A VPN or Virtual Private Network is a method used to add security and privacy to private and public networks. Privacy is increased with a VPN because the user's initial IP address is replaced with one from the VPN provider. This method allows subscribers to attain an IP address from any gateway city the VPN service provides. For instance, you may live in San Francisco, but with a VPN, you can appear to live in Amsterdam, New York, or any number of gateway cities.
https://www.whatismyip.com/what-is-a-vpn/