You can either watch the beginning of this project: https://scratch.mit.edu/projects/381111428/. Or read this: First, choose a language. Then, type what you want to translate to that language into the box. Last, it will say what the result is. If you want the history, press space.
My own project: https://scratch.mit.edu/projects/381111428/ If the text of a translation on the translation history is too long, you go inside of the project, then right-click the list, then select export.