According to this article Hong Kong is the country that has the fastest internet connection with a Speed: 54.1 megabits per second.
I am from India and when I checked my internet speed using Scanmyspeed.com I got the download speed to be 20.8 Mbps and the Upload Speed to be 5.3 Mbps.

According to a study by Akamai, a leading cloud platform, South Korea has the fastest internet speed with average connection speed of 13.8 Mbp. The second fast place is HongKong with average connection speed of 10.3 Mbp. The third is Japan (8.9 Mbp), followed by Netherlands and Latvia. You can check the full list here.

Inside the US, Rhode Island has the fastest internet speed with average connection speed of 8.2 Mbp. The second fast state is Delaware, followed by District of Columbia.