documentclass[a4paper,12pt]{report}
usepackage[pdfborder=false]{hyperref}
usepackage[czech]{babel}

begin{filecontents}{jobname.bib}
@book{foo2018,
    title = "Filosofie hodnot: problémy lidské existence, poznání a hodnocení",
    author = "Soňa Dorotíková",
    isbn = "80-86039-79-X",
    year = "1998",
    publisher = "Pedagogická fakulta Univerzity Karlovy"
}
end{filecontents}
usepackage[citestyle=verbose,backend=biber]{biblatex}
addbibresource{jobname.bib}

begin{document}

Full description, not clickable:
footcite[1]{foo2018}

Short description, but link to previous footcite, which I don't want:
footcite[164]{foo2018}.

This should be clickable
url{http://kernel.org}

printbibliography
end{document}

documentclass[a4paper,12pt]{report}
usepackage{hyperref}
usepackage[czech]{babel}

begin{filecontents}{jobname.bib}
@book{foo2018,
    title = "Filosofie hodnot: problémy lidské existence, poznání a hodnocení",
    author = "Soňa Dorotíková",
    isbn = "80-86039-79-X",
    year = "1998",
    publisher = "Pedagogická fakulta Univerzity Karlovy",
}

@online{bar2017,
  author = {Baz},
  title = {Title},
  date = {2017},
  url = {http://kernel.org},
}
end{filecontents}
usepackage[citestyle=verbose,backend=biber,hyperref=false]{biblatex}
addbibresource{jobname.bib}

begin{document}

Full description, not clickable:
footcite[1]{foo2018}

Short description, but link to previous footcite, which I don't want:
footcite[164]{foo2018}.

footcite{bar2017}.

This should be clickable
url{http://kernel.org}

printbibliography
end{document}