Welcome to the QuickBooks Community, Venkatesh-8224.
I'd like to check this for you and get it taken care of myself. However, all third-party applications (non-intuit) will no longer have access to their software.
You can check Paycor's website for the steps on how to import the payroll transactions into QuickBooks Online or you might need a third-party application for integration.
There's also a community dedicated to developers and the creation of applications. This site contains resources for software development, as well as the ability to ask fellow developers questions. You can find additional information about this at the following link: Intuit Developer.
I'll be sharing with you the following write-ups below. These articles contain more information about how QuickBooks Payroll works and the different types of compensation as well as on what are the types of federal forms you need to file. Also, it will provide you a sample breakdown of a paycheck.
Payroll 101.
The Absolute Beginner’s Guide to Payroll.
If I can be of help while working in QuickBooks, feel free to let me know by adding a comment below. I'd love to help.