Customisation of Biblatex command

Question

I have used \usepackage[style=apa, backend=biber, uniquename=false]{biblatex} command in my article. Now I need help to (i) delete the issue number of the referred journals (ii) make volume of the journal in references BOLD (iii) For multiple author names are joined by '&" symbol, want them to be 'and', however in .bib file its 'and' but in the .tex file its showing symbol. I am using APA style

Answer 1

You can get rid of the number field with a sourcemap (see for example Disable ISSN but keep ISBN with biblatex, Is it possible to suppress a specific field from bibtex .bbl in biblatex?). The volume can be formatted in bold by modifying the field format (cf. Make the author names, the year, and the journal's volume number bold with biblatex/biber).

For the "&" we need to modify the context-sensitive finalnamedelim delimiter.

\documentclass[american]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{csquotes}
\usepackage[style=apa, backend=biber, uniquename=false]{biblatex}
\DeclareSourcemap{
  \maps[datatype = bibtex]{
    \map{
      \pertype{article}
      \step[fieldset = number, null]
    }
  }
}
\DeclareFieldFormat[article]{volume}{\mkbibbold{\apanum{#1}}}
\DeclareDelimFormat[parencite]{finalnamedelim}
  {\ifnum\value{liststop}>2 \finalandcomma\fi\addspace\bibstring{and}\space}
\DeclareDelimFormat[bib,biblist]{finalnamedelim}{%
  \ifthenelse{\value{listcount}>\maxprtauth}
    {}
    {\ifthenelse{\value{liststop}>2}
       {\finalandcomma}
       {}%
     \addspace\bibstring{and}\space}}
\addbibresource{biblatex-examples.bib}
\begin{document}
Lorem \autocite{sigfridsson,aksin}
\printbibliography
\end{document}