Why are there discrepancies in the way words are spelled and positioned on the cards? For example “Iugement” and “Justice” or words written on the left or the right, etc.

There could be a hidden meaning there or it could simply be that they were simply engraving errors which were repeated subsequently; or a combination of both.

Personally, I don’t see that as significant. The Tarot has enough clear unambiguous symbology to reveal what must be revealed in a reading. Plus, if we feel compelled to ascribe meaning to those details we can.

Each card is an archetype; know the essential meaning of that archetype and that is more than enough to interpret most messages.