\DocumentMetadata{testphase = {phase-III,math}}
\documentclass{article}

\usepackage[T1]{fontenc} % encoding
\renewcommand{\familydefault}{\sfdefault} % sans-serif font

\usepackage[french]{babel} % langages
\frenchsetup{SmallCapsFigTabCaptions=false}

\newcommand{\settitle}{TITLE}
\newcommand{\setauthor}{YOU}

\usepackage[
  pdfauthor={\setauthor}, % author metadata
  pdftitle={\settitle},   % title  metadata
  hidelinks,              % clickable nks in table of contents
]{hyperref}

\title{\settitle}
\author{\setauthor}
\date{}

\begin{document}
\maketitle
\tableofcontents
\clearpage

\section{SECTION}
Hello, world!

\end{document}