Welcome to the Community, @sarvambus-gmail-.
For connecting API requests using your QuickBooks Online (QBO) account, I recommend reaching out to our Intuit Developers forum. From there, many programmers, developers, and QBO experts can help you. Here's how:
Also, feel free to reach out to our Customer Care team to further help you do any of your QBO tasks. Our support operation hours are from Monday to Friday 9:30 AM to 6 PM.
Don't hesitate to post again here if you have any QBO concerns. I'm always here to help. Keep safe.