I am trying to work out of the library has a scroll text function but looking online I can only see scroll functions for this type of display using functions that start with 'display' instead of 'tft'.
Is there a new library where 'display' is replacing 'tft' for everything?
tft probably refers to the name of the object created by the sketch If so, it could just as well be called display or tom, dick or harry for that matter, so feel free to use tft.scroll() or whatever the function is called, instead of display.scroll() in your sketch
For more help please post a complete sketch which, with your number of previous posts I am surprised you did not do in the first place