Hello @Narendra,
If you are using SSMS, could you please let me know your SSMS version?
I can able to view the estimated execution plan and XML plan using SSMS v19.0
To view the XML plan use the command SET SHOWPLAN_XML ON
To view the estimated execution plan, you can enable it from SSMS(please see the below screenshot)
I hope this helps. please let me know if you have any further questions.