Where does this style work?

It works wherever plain text is accepted — bios, usernames and comments — because the letters are real Unicode characters, not a font.

Can I copy it together with other words?

Yes — copy the whole output and paste it next to plain text; every letter stands alone.

Tiny raised letters — footnotes and math

Superscript raises letters into small forms (ᵃ-ᶻ, ⁰-⁹) — footnote and exponent styling. Unicode has no superscript Q, so Q stays unchanged.

ʸᵒᵘʳ ᵗᵉˣᵗ ʰᵉʳᵉ