@NIRANJANDJ hi, is it a requirement coming from business? Are users struggling with understanding data being presented on screen and if padding is increased will it improve situation?
@NIRANJANDJ Pega 25 offers extended theme configuration including that gap between cards - amount of white space, please see here Pegasystems Documentation
@NIRANJANDJ before you start customizing the UI, I would recommend looking at Field Groups. These create visually differentiated elements on the screen, designed exactly for this use case (a variation on cards that Kamil mentions)