Add text to your iMovie project - Apple Support
support.apple.com › en-us › HT212141May 12, 2021 · Here's how to add text to a video, photo, or background clip in the timeline. Position the playhead where you want the text, click Titles above the browser, then double-click a style. You can also drag the style to the timeline, over the clip where you want it to appear. The text is added as an attached clip, above the other clip in the timeline.