Awesome to have you join us here in the Community, @sanjeev.
I can assist you with information in adding notes to your statements. At this time, there isn't an option to add notes. I have provided a link below to provide additional information on customizing financial statements and what opportunities are available.
https://quickbooks.intuit.com/learn-support/getting-started-with-quickbooks/how-to-customize-financi...
If you have any further questions or concerns, I'm always here to help.