Game concept · Advanced Activities
Tour Success
The game also links it as Tour Success Points, Tour Success Point.
From the game's encyclopedia
A value which determines which rewards you will get at the end of your Grand Tour. You can gain and lose points by selecting certain options at the start of your tour and making decisions which align with your Tour Type.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Tour Success is an entry of Crusader Kings III's in-game encyclopedia (Advanced Activities). The game explains it: "A value which determines which rewards you will get at the end of your Grand Tour." It is part of Tour. The game also links it as Tour Success Points and Tour Success Point. Patch 1.20.1.2, from game/common/game_concepts/04_ep2_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/04_ep2_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.