You can get it through the Analytics eVar that receives DFA campaign attribute, impressions, and clicks data. Typically, this is the Tracking Code eVar ( s.campaign ), but you can choosen another eVar, you can use that. API end-points details - API Reference
I would suggest to use Advertising Analytics to get DFA data in workspace. It's pretty sleek. Only caveat is Advertising Analytics is available for Adobe Analytics Select , Prime , and Ultimate SKUs only.