How do I create this table?

Don't use booktabs with vertical rules.

And don't load packages twice (you have two usepackage{graphicx}).

I have used tabularx, and [4pt] and rule{0pt}{16pt} to add some space before and after the horizontal rule.

documentclass[11pt,a4paper]{article}
usepackage[latin1]{inputenc}
usepackage{tabularx}
begin{document}
begin{center}
    begin{tabularx}{textwidth}{X|X}
        multicolumn{1}{c|}{hello} & 
        multicolumn{1}{c}{hello} [4pt]
        hline
        rule{0pt}{16pt}hello hello hello hello hello hello hello hello hello hello space infinity & hello hello hello hello  
        hello hello hello hello hello & hello hello hello hello  
    end{tabularx}
   end{center}
   end{document}

The screenshot that accompanies your query creates the impression that each table column should be just wide enough (but no wider) to typeset three instances of the word "hello", separated by whitespace. If this impression is correct, you should use the p column type for both columns. The p column type takes an argument -- the usable width. In the preamble, be sure to set up a length parameter and measure the width of "hello hello hello" via a settowidth directive.

Oh, and don't use the booktabs package (and midrule directives) if you employ vertical lines. Instead, use hline.

documentclass[11pt,a4paper]{article}
usepackage{array} % for "extrarowheight" macro
newlengthmylen
settowidthmylen{sffamily hello hello hello} % measure width of "hello hello hello"
begin{document}
begin{center}
sffamily % switch to sans-serif
setlengthextrarowheight{2pt} % for a more open "look"
begin{tabular}{p{mylen}|p{mylen}}
multicolumn{1}{c|}{hello} & 
multicolumn{1}{c}{hello} [2pt]
hline
hello hello hello hello hello hello hello hello hello hello space infinity & hello hello hello hello  
hello hello hello hello hello & hello hello hello hello 
end{tabular}
end{center}
end{document}

Since the rules are very thick, maybe you want to have the rounded caps as in the picture. It's possible to draw rules with rounded caps with Tikz. With the environment {NiceTabular} of nicematrix, you have PGF/Tikz nodes constructed under the row, columns and cells and it's easy to use them with Tikz to draw whatever rule you want.

documentclass{article}
usepackage{nicematrix,tikz}

begin{document}

setlength{extrarowheight}{2mm}
begin{NiceTabular}{>{raggedleft}p{2.6cm}>{raggedrightarraybackslash}p{2.6cm}}
Block{}{hello} & Block{}{hello} 
hello hello hello hello hello hello hello hello hello hello hello hello 
& hello hello hello hello hello hello hello hello hello hello hello hello 
hello hello hello hello hello hello hello hello hello hello hello hello 
& hello hello hello hello hello hello hello hello hello hello hello hello 
hello hello hello hello hello hello hello hello hello hello hello hello 
& hello hello hello hello hello hello hello hello hello hello hello hello 
CodeAfter
tikz draw [very thick, line cap = round] 
            (1-|2) -- (last-|2)
            (2-|1) -- (2-|3) ;
end{NiceTabular}

end{document}

You need several compilations (because nicematrix uses PGF/Tikz nodes).