All videos are automatically transcribed by a transcription engine. You can find the transcription in the video response page under the video. You can make adjustments to the transcript by clicking on 'Edit'. Don't forget to save it once you are done.
If you wish to have the videos translated you can choose the translation language in the first step of the project '1. Configure'.
Just like the transcription, you can also edit the translation:
See the list of supported languages here.