I was trying to find a way to auto populate the field of a content automatically from the values setup in the other content. For example the dropdown in a content field should have a dynamic values auto populated from the reference of other content so if the values in the main content change, this should get auto updated in the dropdown field as well.
Hi Anish, for this use case you could use a UI extension.
With UI extension SDK, you can get values of a field and the set values to another field, please refer to the documentation: https://www.contentful.com/developers/docs/extensibility/ui-extensions/sdk-reference/#field 
Hi Alma,
I see this link focusing on the same content field value linking however what I was trying to link is field from one content linking/referencing with the field from the another content.