For the use of -Excel to BIM - Blender file you can find the explenations here: https://www.obim.ro/2024/02/13/import-xls-tables-with-sverchok/
and at this video: https://www.youtube.com/watch?v=Q_2oiTTZHOI&t=1s&ab_channel=IonutBIMStudio
You can use my Test.xls file from this upload or create your own.
There are two sverchok threes - one with the worked example on the blog, and one with the example from the demo video. The nodes in the Foundations three are a bit mix. So let's see if you can make them work.