i hope youre not planning on planning on adding every single function and line of code into one skript, thatd be a really long parsing time;
that being said, i could contribute some functions ive come across in my 3 years of skripting experience, as well as links to them.
if you need custom ones coded feel free to message me on discord (agentgamerpro) or contact me in minehut
ColorUtils: Gradients and rainbow text - ColorUtils 1.16+ | skUnity Forums
Number Format: https://forums.skunity.com/threads/1-skript-challenge-number-format.247/post-1056
Number Format 2.0: https://forums.skunity.com/threads/1000-to-1k.9198/post-40338
Those are from the top of my head, again if you need anything, feel free to ask