Hi shubhamlohomi-7666,
Welcome to Microsoft Q&A.
IS THERE ANY TOOL OR ANY OTHER WAY BY WHVIH I CAN UNISTALL IT THEN PLEASE FEEL FREE TO SUGGEST IT TO ME
Please try to use this toubleshooter which could help you automatically repair issues when you're blocked from installing or removing programs.
MINE SQL SERVER MANAGEMENT STUIDO VERSION IS 18.
In addition, what the version of SSMS are you using? You can check the version by going to the Help > About window in SSMS.
If you are using SSMS18 GA version, you can just install the newer version of SSMS, it will replace the old version of SSMS automatically.
Best Regards,
Amelia
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