
I'm not sure that the (basic) Text title is scriptable...
With a Fusion-based Text+ title though, you could get the composition using something like my_composition = my_title.GetFusionCompByIndex(1), then its Text+ tool itself using something like my_text_tool = my_composition.GetToolList(False, "TextPlus")[1], and then get the text from its 'Styled Text' attribute, which would be something like my_text = my_text_tool.StyledText[0]
... note that I haven't tested this and am not guaranteeing these are the right calls and/or syntax, but I did something similar myself a few years ago and it was something along these lines.
Good luck.
Andy