This character is a Currency Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written as end of a European number, e.g., a currency symbol, from left to right. When changing direction it is not mirrored. U+20B7 prohibits a line break after it, if it is followed by a number.
The CLDR project calls this character “spesmilo” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: currency.
The Wikipedia has the following information about this codepoint:
The spesmilo (pronounced[spesˈmilo], plural spesmiloj[spesˈmiloi̯]) is an obsolete decimal international currency, proposed in 1907 by René de Saussure and used before World War I by a few British and Swiss banks, primarily the Ĉekbanko Esperantista.
The spesmilo was equivalent to one thousand spesoj, and worth 0.733 grams (0.0259 oz) of pure gold (0.8 grams of 22 karat gold), which at the time was about one-half United States dollar, two shillings (one-tenth of a pound sterling) in Britain, one Russian ruble, or 2+1⁄2 Swiss francs. On 6 November 2022, that quantity of gold would be worth about US$43.50, £38 sterling, €44, ₽2692 Russian roubles, and SFr 43 Swiss francs.
The basic unit, the speso (from Italian spesa or German Spesen; spesmilo is Esperanto for "a thousand pennies"), was purposely made very small to avoid fractions.