Steam will automatically download the English voice files (approximately 4GB). PlayStation 4/5: From the home screen, highlight the game and press the Manage Game Content Find and install the English Language Pack from the list. Xbox / Game Pass: Change the sLanguage=en setting in your Fallout4.ini file (found in Documents\My Games\Fallout4 ) if the game defaults to your regional language. Steam Community Community & Quality Enhancements
Once you've downloaded the English voice pack, follow these steps to install it: fallout 4 english voice pack link
If you need help tracking down a specific solution, let me know: Steam will automatically download the English voice files