\documentclass[a6paper]{scrbook}% a6paper only for demo
\usepackage{afterpage}
\newcommand*{\aftereverypage}[1]{%
  \afterpage{#1\aftereverypage{#1}}%
}%
\makeatletter
\AtBeginDocument{%
  \addtocontents{toc}{%
    \protect\aftereverypage{\protect\section*{\protect\contentsname{}
        (Continued)}}%
  }%
}
\g@addto@macro{\tableofcontents}{%
  \let\AP@=\relax
}
\makeatother
% --------- only for demo start ------------
\newcommand*{\sectionloop}{%
  \ifnum\value{section}<99\section{Test}Text\sectionloop\fi%
}
% --------- only for demo end ------------
\begin{document}
\tableofcontents
\chapter{Test}
\sectionloop
\end{document}