To export data from one of the curves being displayed in a monitor plot or XY plot, right-click on the monitor or part node providing the data you wish to export and select Export...
You can export all of a plot's data at once with the same type of operation by right-clicking on the node of that plot.
This action uses an operating system-specific standard Save dialog, via the save as action, to store the data points of the selected monitor or data set to file. The exported file is written as comma separated values (.csv)--a format supported by many spreadsheets.