How to extract the connectivity values by region?

Hello,
In a MEG study, I want to extract the connectivity values by region into an Excel file in order to calculate the correlation between them and some psycho scores.
Could you please tell me how to proceed ?
Thank you by advance for the help you can provide,

Once you have computed the desired connectivity metric, the connectivity matrix can be retrieved with this:

There are plenty resources on writing data from Matlab to Excel, for example:
https://www.mathworks.com/help/matlab/import_export/exporting-to-excel-spreadsheets.html

Check this tutorial for more info on connectivity metrics in Brainstorm
https://neuroimage.usc.edu/brainstorm/Tutorials/Connectivity