Hi there MModi,
Thanks for reaching out about your password. QuickBooks Desktop is a great tool able to help you keep track of sales and expenses so you know the profitability of your business. I can point you in the right direction for assistance with your password.
To reset your password, you can follow the steps in this article. If you aren't able to complete the steps, or the password still isn't working, then I recommend reaching out to the QuickBooks Desktop support team outside of the Community. They'll be able to assist with getting you back in your account so you can manage your books. You can reach them using the methods outlined in the QuickBooks Desktop software support policies.
If you have any other questions, feel free to reach out here.