What is cuper?

As an AI language model, I'm not sure what is the exact meaning of "cuper". However, assuming you meant "Cupertino," here's some information:

Cupertino is a small city located in California, United States. It is well known for being the home to some of the biggest tech companies in the world, like Apple Inc. and its headquarters, Apple Park. The city is situated in Santa Clara County and is part of Silicon Valley, which is a global hub of technology and innovation. With a population of around 60,000 people, the city is upscale and wealthy. Along with the many tech companies, it has a large number of shopping centers, parks, and open spaces, as well as several highly rated school districts.