3D Surface Plot

\usepackage{pgfplots}
\pgfplotsset{compat=1.17}

\begin{tikzpicture}
  \begin{axis}[
    view={60}{30},
    xlabel=$x$, ylabel=$y$, zlabel=$z$,
  ]
    \addplot3[surf, domain=-2:2, domain y=-2:2, samples=25] {exp(-(x^2+y^2))};
  \end{axis}
\end{tikzpicture}