The Variable Clustering node produces the correlations by default when you run the node.
After the node completes, view the results.
In the Results window, select View -> Model -> Variable Correlation. A heat map is displayed.
To view the values of the heat map, click the Table icon, and a Table Variable Correlation window is displayed.
From that window, you can select File -> Save As if you want to create a SAS data set that contains the correlations.
The covariances are not output.