\documentclass[12pt, a4paper]{article}
%\pagestyle{plain}
%\usepackage[top=0.7 in,bottom=0.5 in,left=0.6 in,right=0.6 in]{geometry}
%\usepackage[parfill]{parskip}
%\setlength\parindent{0pt} % Removes all indentation from paragraphs
%\renewcommand{\baselinestretch}{1.10} %line spacing
\usepackage{enumitem}
%\usepackage{parskip}
\begin{document}
%\setlist[enumerate]{label={\arabic*.}}
\begin{enumerate}[label={\arabic*.}]
\item blah 1 222dfhkvnuittvriebvnytbyrteoy marcus polo texas polo fg polo polo marco bolo marco bolo marco bolo marco bolo
\item blah 2
\end{enumerate}
\end{document}
This gives
blah 1 222dfhkvnuittvriebvnytbyrteoy marcus polo texas polo fg polo polo marco bolo marco bolo marco bolo marco bolo.
blah 2
However intend to start the second line of each item from below the item number. Secondly how to adjust space between item number and start of the item
wide=0ptis more stable than justwide. – Mico May 03 '23 at 12:18