MWE
\documentclass[12pt, a4paper, twoside, %openright,
toc=listof, BCOR=5mm, bibliography=totoc, parskip=half]{scrreprt}
\usepackage[square,sort,comma,numbers]{natbib} %Literaturverzeichnis
\usepackage[linktoc=all,hidelinks]{hyperref} %Verlinkungen
\usepackage[automark,headsepline]{scrlayer-scrpage} %header
%header
\clearscrheadfoot
\automark{section}
\ihead{\headmark}
\ohead{Seite\enspace\pagemark}
\setkomafont{pageheadfoot}{\normalfont}
\begin{document}
\thispagestyle{plain}
\pagenumbering{Roman}
\tableofcontents
\thispagestyle{plain}
\KOMAoptions{open=any}
\thispagestyle{plain}
\listoffigures %Abbildungsverzeichnis
\thispagestyle{plain}
\listoftables %Tabellenverzeichnis
\thispagestyle{plain}
\cleardoublepage
\KOMAoptions{open=right}
\pagestyle{headings}
\end{document}
so what i tried to receive here is an output where i have my usual headers on each normal page but just a plain pagenumber (in Roman style) on the pages of my list of figure and list of tables, but what i got is no pagenumbers on the list pages, even though i got the pagenumbers in the TOC. Neither of these lists has more than one page so i don't know, if the pagenumber would be shown after the first page.
\frontmatter
and\mainmatter
. The first one put imidiately afterbegin{document}, and latter one before your main text (maybe before
KOMAoptions{...}`.\clearscrheadfoot
clears everything, i.e. the page numbers as wellreport
norscrreprt
provide the\...matter
business.\ohead*{Seite\enspace\pagemark}