I can offer two biblatex-ext-based solutions depending on your exact requirements. (Note that in any case I have only implemented the rough look of the style, not the finer details - which are not all visible in the one screenshot from the question anyway.)
If you just want to repeat the citation label in the bibliography, you can use biblatex-ext's introcite feature.
Either introcite=plain
\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{lmodern}
\usepackage{csquotes}
\usepackage[backend=biber,
citestyle=ext-authoryear,
bibstyle=ext-authortitle,
sorting=nyt,
introcite=plain,
]{biblatex}
\DeclareFieldFormat{bbx@introcite}{\mkbibbold{#1}}
\DeclareNameAlias{sortname}{family-given}
\renewcommand*{\mkbibnamefamily}{\textsc}
\addbibresource{biblatex-examples.bib}
\begin{document}
Lorem \autocite{sigfridsson}
ipsum \autocite{worman}
dolor \autocite{nussbaum}
sit \autocite{geer}
\printbibliography
\end{document}

or introcite=label
\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{lmodern}
\usepackage{csquotes}
\usepackage[backend=biber,
citestyle=ext-authoryear,
bibstyle=ext-authortitle,
sorting=nyt,
introcite=label,
]{biblatex}
\DeclareFieldFormat{bbx@introcite}{\mkbibbold{#1}}
\DeclareNameAlias{sortname}{family-given}
\renewcommand*{\mkbibnamefamily}{\textsc}
\addbibresource{biblatex-examples.bib}
\begin{document}
Lorem \autocite{sigfridsson}
ipsum \autocite{worman}
dolor \autocite{nussbaum}
sit \autocite{geer}
\printbibliography
\end{document}

If you want a real tabular bibliography, you can use biblatex-ext-tabular and re-use some of the code for the introcite feature.
Note that you need to define a new tabular bibliography environment and now use \printbibtabular instead of \printbibliography.
\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{lmodern}
\usepackage{csquotes}
\usepackage[backend=biber,
citestyle=ext-authoryear,
bibstyle=ext-authortitle,
sorting=nyt,
]{biblatex}
\usepackage{biblatex-ext-tabular}
\usepackage{longtable}
\usepackage{array}
\newcolumntype{L}[1]{%
>{\raggedright\let\newline\\arraybackslash\hspace{0pt}}p{#1}}
\defbibtabular{bibtabular}
{\setlength{\LTpre}{0pt}%
\setlength{\LTpost}{0pt}%
\renewcommand*{\arraystretch}{2}%
\begin{longtable}{%
@{}
L{\dimexpr0.3\textwidth-\tabcolsep\relax}
L{\dimexpr0.7\textwidth-\tabcolsep\relax}
@{}}}
{\end{longtable}}
{\anchorlang{\usebibmacro{introcite:typeset}} &
\driver{} \}
\DeclareFieldFormat{bbx@introcite}{\mkbibbold{#1}}
\DeclareNameAlias{sortname}{family-given}
\renewcommand*{\mkbibnamefamily}{\textsc}
\addbibresource{biblatex-examples.bib}
\begin{document}
Lorem \autocite{sigfridsson}
ipsum \autocite{worman}
dolor \autocite{nussbaum}
sit \autocite{geer}
\printbibtabular
\end{document}

biblatex. – Bernard Dec 20 '20 at 22:33