Changing the tuplet number
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By default, only the numerator of the tuplet number is printed over the tuplet bracket, i.e., the numerator of the argument to the \tuplet command.
Alternatively, num:den of the tuplet number may be printed, or the tuplet number may be suppressed altogether.
\version "2.24.0"
\relative c'' {
\tuplet 3/2 { c8 c c }
\tuplet 3/2 { c8 c c }
\override TupletNumber.text = #tuplet-number::calc-fraction-text
\tuplet 3/2 { c8 c c }
\omit TupletNumber
\tuplet 3/2 { c8 c c }
}