I have two sources, and I apply transformations to them. I want to find the distance to the point of convergence. Is there a way to do that? Or get the coordinates of the intersection of the two sources?

Ruler source let you compute distance.

You can’t compute the intersection within ParaView but , if you are a developper, it can be done with vtkbool : https://github.com/zippy84/vtkbool

or with the vtkBooleanOperationPolyDataFilter https://vtk.org/doc/nightly/html/classvtkBooleanOperationPolyDataFilter.html