I am not sure what you are aiming at. I suppose you are looking for fields like Cost Variance, Duration Variance, Finish Variance, Work Variance?
Save your project as an Excel file. [File, Save As, Save as type: Excel Workbook].
In Export Mapping make a New Map, with the fields you need.
In Excel, it may be necessary to use a few formulas to strip off the text. I usually look for the space to determine how many characters [-1] I need in the Left function.
I assume you know how to make a graph from numeric data?
Good luck.