In Subs, click Edit subtitles, then choose Find and replace from the Subtitles panel’s More actions menu to replace a word everywhere at once.
Open Subs → Edit subtitles, then choose Find and replace from the Subtitles panel’s More actions menu to replace every occurrence of a word in your subtitles at once.
Click Edit subtitles. If the Subtitles panel is already open on the right, the button reads Hide subtitles and you can skip this step.
In the right-side Subtitles panel, click More actions (the three-dot button next to the close button) and choose Find and replace. The find and replace box opens just below the title row.
You can also open the Script panel, open its menu, click Subtitles, and then choose More actions > Find and replace.