Best practices
Use an action sheet — not an alert — to offer choices related to an intentional action.
Use action sheets sparingly.
Aim to keep titles short enough to display on a single line.
Provide a message only if necessary.
If necessary, provide a Cancel button that lets people reject an action that might destroy data.
Make destructive choices visually prominent.
Platform considerations
iOS, iPadOS
Use an action sheet — not a menu — to provide choices related to an action.
Avoid letting an action sheet scroll.
watchOS
Avoid displaying more than four buttons in an action sheet, including the Cancel button.
For the complete guidance, including worked examples and illustrations, see the canonical page: https://developer.apple.com/design/human-interface-guidelines/action-sheets