Greetings jitendra370,
Thanks for visiting the Apple Support Communities! It seems you're curious if there's any differences in the music catalog if you change the country associated with your Apple ID.
It's possible some content is not available if you change your Apple ID country. Check out the information in the following article: Availability of Apple Media Services - Apple Support
"The availability and features of certain apps, movies, and more can vary. If you think an app or other media should be available in your country or region, contact the developer or publisher directly."
You can use this link to help see what's available in the Apple Music catalog based on country: Apple Services Marketing Tools
Kind regards.