"Voice Memos transcripts can't be copied: When trying to select the transcribed text in Voice Memos it is impossible to select the text. Has anyone found a solution or workaround for this? What alternative would you use? Thanks!"
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Selecting the Voice Memo Text:
If you can't do so yourself, then do so manually. As you scroll your way down the transcript, take some screenshots, and then open them in the Photos app. Once opened, highlight the text, and then right-click, and select "Copy". Paste it in an eMail. Go here: Take a Screenshot on Mac - Apple Support