\documentclass[a4paper]{article}
\usepackage[MeX]{polski}
%\usepackage[utf8]{inputenc}


\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{amsmath}
\usepackage{float}
\usepackage{graphicx}
\usepackage{multicol}
\usepackage[left=2cm,right=2cm]{geometry}


\addtolength{\voffset}{+6.0cm}
%\addtolength{\textheight}{+3cm}

\addtolength{\hoffset}{-2cm}
\addtolength{\textwidth}{+4cm}

\pagestyle{empty}

\begin{document}
\begin{center}

    {\Huge \bf Certyfikat Uczestnictwa}

\vspace{1.0cm}

{\huge \emph{FILLER_NAME}}

\vspace{0.75cm}


\linespread{1.2}
{\Large
FILLER_TAKE udział w \\ {\bf Wakacyjnych Warsztatach Informatycznych 2022}\\
}
\end{center}

\vspace{1.5cm}
\noindent
\begin{minipage}{0.4999\textwidth}
    \centering
\large Kierownik obozu
\end{minipage}
\begin{minipage}{0.4999\textwidth}
    \centering
\large Kadra WWI
\end{minipage}

\vspace{7.75cm}
\begin{center}
{\Huge Płock 2022}
\end{center}

\pagebreak

\end{document}
