HP Pavilion…win 10 Where in HELP should I look.
Please detail a bit what you want to do. Format it’s a cell property.
https://help.libreoffice.org/6.1/en-US/text/scalc/01/05020000.html?DbPAR=CALC#bm_id3148663
In offline help directly with LibreOffice open. Or here:
https://documentation.libreoffice.org/en/english-documentation/
Or edit your question here and describe exactly what you want to do and formulate your question.