Hi tanvi, Please follow given below link and steps with the help of these link and steps you can solve your problem, it may be helpful to you.
Where can I find my Salesforce security token? :
1. Go to My Settings 2. Personal 3. Reset My Security Token. 4. Click Reset Security Token. 5. The new security token is sent to the email address in your Salesforce personal settings.
2. on profile click on settings.
3. In presonal information click on 'Reset My Security Token' and click on 'Reset Security Token'.
Please follow given below link and steps with the help of these link and steps you can solve your problem, it may be helpful to you.
Where can I find my Salesforce security token? :
1. Go to My Settings
2. Personal
3. Reset My Security Token.
4. Click Reset Security Token.
5. The new security token is sent to the email address in your Salesforce personal settings.
For more detail follow below link :
Link: https://webkul.com/blog/security-token-salesforce/
I hope you find the above solution helpful. If it does, please mark as Best Answer to help others too.
Thanks and Regards,
Deepali Kulshrestha