There is no tutorial for surface cut function

[warriorman8]

As the title says how is it done and secondly how do I boolean loft cut a curved shapes loft.

[chbergmann]

Here is a quite short description:
https://github.com/chbergmann/CurvedShapesWorkbench#-surface-cut
Maybe the CrossSections function in the Part workbench is a better alternative for you. See https://wiki.freecad.org/Part_CrossSections
I wrote the SurfaceCut because the CrossSections function cannot be used easily in Python scripts.