This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F467 prohibits a line break after it, if it’s followed by an emoji modifier.
The CLDR project calls this character “girl” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: bright-eyed, child, daughter, granddaughter, kid, Virgo, young, younger, zodiac.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 👧︎ The character can be changed in appearance, if it is followed by an emoji modifier. See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
A girl is a young female human, usually a child or an adolescent. While the term girl has other meanings, including young woman, daughter or girlfriend regardless of age, the first meaning is the most common one.
The treatment and status of girls in any society is usually closely related to the status of women in that culture. In cultures where women have or had a low social position, girls may be unwanted by their parents, and society may invest less in girls. The difference in girls' and boys' upbringing ranges from slight to completely different. Mixing of the sexes may vary by age, and from totally mixed to total sex segregation.