Download from: folders and theme. Recommend Nordic-darker. Too download: Icons and gedit theme
Extract from Nordic-darker two folders and copy to /usr/share/themes/.
Extract from Nordic-folder the Nordic-darker folder and copy to /usr/share/icons
Extract from Nordic-cursors and copy to /usr/share/icons
Copy nord.xml to /usr/share/gtksourceview-4/styles. Fron GEDIT app choose Nord pallete.
Choose from GNOME TWEAKS appropiate themes for Shell, Icons, Cursors and Applications.
NOTE: You need User-themes extension *enabled.