@Minisha_M you can add static data in the Extension properties like below:

In order to access these properties at runtime you need to parse it. From TaskListener you can access it like,
ExtensionElements extensionElements =((UserTask) delegateTask.getBpmnModelElementInstance()).getExtensionElements();
Collection<CamundaProperty> properties = extensionElements.getElementsQuery()
.filterByType(CamundaProperties.class).singleResult().getCamundaProperties();