I want to buy a MOSFET in the rating of 600V/20A. I also want to buy MOSFET driver for that. I have to use it with Arduino Uno for controlling purpose. But I can't select which one to buy. Can anyone suggest me a good MOSFET + MOSFET Driver?

 

Most manufacturers have selection tables where you can set parameter limits, package, etc.
Examples: onsemi, Infineon and more...
Or you browse distributors like Farnell, RS, etc. They usually display tables where you can select filters.