Most sources (such as books, journal articles, and films) only require the year. For magazines, newsletters, newspapers, social media, YouTube videos, blog posts, etc., provide the full date.
If an item does not have a discernible date, you may use n.d. as the date (for no date); do not simply leave out the date. For webpages, do not use a general copyright date given for the website. Look for a specific created, updated, or modified date for the page or document you are using.
Source: https://apastyle.apa.org/style-grammar-guidelines/references/elements-list-entry#date