Thank you Ashish for the response.
The section that you have highlighted is to input the experimental test data, which will be used for curve fitting (see the image below). But, what I am doing is taking the coefficients C10, C01, C20, etc. from published papers (I don't have experimental data) and using them for different hyper-elastic models. Ansys creates the graph of stress vs. strain once I input these coeffiecents. I would like to export the data from these graphs to compare different models. For example, I have Mooney Rivlin model coefficients from different papers and also Yeoh model coeffiecients. I would like to plot them (stress vs strain) together to compare them. To do this, I need to export the graph data to an external file.