\documentclass[a4paper,,numbers,,oneside,LTRgeometry]{book}

\RequirePackage{amsmath}
\RequirePackage{amssymb}
\RequirePackage{amsthm}
\RequirePackage{booktabs}

\RequirePackage{pdflscape}

\RequirePackage{afterpage}

\RequirePackage{capt-of}% or use the larger `caption` package
\RequirePackage{pbox}
\RequirePackage{multirow}
\RequirePackage{pbox}
\RequirePackage{tcolorbox}
\RequirePackage{tabu}
\RequirePackage{array}
\RequirePackage{graphicx,rotating,booktabs}
\RequirePackage{xepersian}
\settextfont[Script=arab,Language=FAR,Scale=1.25,ExternalLocation,%
  ]{IRLotus}
  \setdigitfont[Numbers={Lining,Proportional},Scale=0.85]{Persian Modern}
%====================================
\begin{document}
%\afterpage{%
    \clearpage
    \thispagestyle{empty}
    \begin{landscape}
    \begin{minipage}{\linewidth}
    \captionof{table}{چگونه می توان شمارش صفحه بعد را با احتساب شماره این صفحه ادامه داد؟}
\par
\begin{tabular}{rrrr}
\hline
\text{u} & \text{s} & \text{p} & \text{n} \\
\hline
$+0.0007$ & $+0.0006$ & $+0.0002$ & $+0.0002$ \\
\hline
\end{tabular}
\end{minipage}
    \end{landscape}
   \clearpage
    %}
\end{document}