This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is a superscript version of the glyph Glyph for U+002BPlus Sign. It has no designated width in East Asian texts. In bidirectional text it is written as European number separator from left to right. When changing direction it is not mirrored. The word that U+207A forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference. Their use has been extended to many other meanings, more or less analogous. Plus and minus are Latin terms meaning "more" and "less", respectively.
The forms ⟨+⟩ and ⟨−⟩ are used in many countries around the word. Other designs include ⟨﬩⟩ for plus and ⟨⁒⟩ for minus.
Representations
System
Representation (click value to copy)
Nº
8314
UTF-8
E2 81 BA
UTF-16
20 7A
UTF-32
00 00 20 7A
URL-Quoted
%E2%81%BA
HTML hex reference
⁺
Wrong windows-1252 Mojibake
âº
Encoding: GB18030 (hex bytes)
81 36 AE 32
AGL: Latin-5
plus.superior
Adobe Glyph List
plussuperior
digraph
+S
RFC 5137
\u'207A'
Bash and Zsh inside echo -e
\u207A
C and C++
\u207A
C#
\u207A
CSS
\00207A
Excel
=UNICHAR(8314)
Go
\u207A
JavaScript
\u207A
Modern JavaScript since ES6
\u{207a}
JSON
\u207A
Java
\u207A
Lua
\u{207A}
Matlab
char(8314)
Perl
"\x{207A}"
PHP
\u{207a}
PostgreSQL
U&'\207A'
PowerShell
`u{207A}
Python
\u207A
Ruby
\u{207a}
Rust
\u{207a}
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