Hi Mritunjay,
I am Dave, an Independent Advisor, I will help you with this.
1
If that was the labelling on the package, that should have been a full retail licence, not an OEM licence, however, that is no guarantee that what is what was in the box.
2
Have a look at the USB section on this link, is that exactly what your purchases USB looks like?
https://www.microsoft.com/en-gulf/howtotell/Sof...
3
If that is in face an OEM licence, then that will not have transfer rights to another PC in the future.
4
Download ShowKeyPlus form the Microsoft Store:
https://www.microsoft.com/en-us/p/showkeyplus/9...
Enter your product key into the section to check your licence key, does that indicate your licence key is OEM or Retail?