Hi Jitendra,

The best colleges/universities for science in the world are as follows:-

• Harvard University, Cambridge
• Stanford University, Stanford
• University of California, Berkeley
• Columbia University, New York
• Massachusetts Institute of Technology, Cambridge
• California Institute of Technology, Pasadena
• Princeton University, Princeton
• University of California, Los Angeles
• University of Oxford, Oxford
• University of Pennsylvania, Philadelphia
• University of Cambridge, Cambridge

Refer here for more info - https://studyabroad.careers360.com/articles/top-universities-in-the-world

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!