\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[OT4]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{polski}
\usepackage{hyperref}

\usepackage{polski}
\makeatletter
\newcommand{\linia}{\rule{\linewidth}{0.4mm}}
\renewcommand{\maketitle}{\begin{page}

    \noindent
    Ewa Nieznalska
    \hfill{Szczecin, 23.10.2019}
   \\ ul.Drzewiarzy 1\\Krzywin\\
   \vspace{1cm}
    \begin{center}
    \textit{\small}\\
    \normalsize \textsc{\@author} \par
    \vspace{1cm}
      \LARGE \textsc{\@title}
         \end{center}
  \end{page}%
  }

\author{\hspace{3.8cm}Dziekan Jerzy Pejaś\\\hspace{6cm}Zachodniopomorski Uniwersytet\\\hspace{2.8cm} Technologiczny\\\hspace{3.2cm}ul. Żołnierska 49\\\hspace{2.9cm}70-310 Szczecin}
\title{List motywacyjny}

\begin{document}
\pagestyle{empty}
\maketitle
jgjfjfujf\\
\newline
khvkugjc
ihvjgvhkuj
fvnfkjvd
\end{document}{}