I searched for it but could not find any details, hence posting it here.
Is it possible to retrieve the data saved in Netlify forms and serve it back to webpage?
yes, it is! You will likely need a function for that.
Here are many cool examples of things you can do:
do you have a specific use case? there may be a 3rd-party way to achieve this that is easier than writing a function from scratch, but we’d need to know more about what you are trying to accomplish 