Extract the ZIP file (to your desktop computer, not to your phone).

Open Lightroom and go to the Presets section. Click on File > Import Profiles & Presets.

Select the presets ZIP file(s) and click Import. → Selecting the ZIP file.

Restart LR and your presets will now be listed in the Presets section.

When in doubt, also feel free to Google/YouTube it.

How do I get these to work on LR CC Mobile? You will need to install the presets on your desktop version of Lightroom CC FIRST, then they will auto-sync into your Lightroom CC Mobile App.