Which country has the most advanced science and technology?

I think there is something wrong with your question. Let me talk about my opinion:

In fact, science and technology have no borders, and that country is not the most developed. Technology belongs to this society, or to mankind. But scientific and technical personnel can be concentrated. In today's world, the scientific research capability must be the United States. The United States has the largest number of scientific and technological talents in the world, and Nobel is a very important weather vane. And we can also see that, for example, Germany's manufacturing industry and South Korea's electronics industry are relatively strong.

More specifically, China is incomparable to other countries in some industries, so the United States is definitely the strongest in terms of scientific and technological development and comprehensive strength of the whole industry.