@Jitesh07
Not sure what your use case is or what exactly you need to achieve at the end.
- If you simply need to map some Sling model over some CF, then you need to look at this as like you would map a Sling model on any other Sling resource. Is the same approach. You write a Sling model, you add your Java properties mapping your CF properties, and you give it a path to read from /content/dam/path/to/your/cf/jcr:content/data/... And the example provided by @arunpatidar are more then enough.
- If your use case is more about having a way to get CF data in JSON format to consume it in other place, not directly in a Sling model, maybe you can consider exploring other 2 options (JSON Exporter and GraphQL) explained in this thread https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/how-to-get-data-from-conte...
