How can I install H5P SCORM libraries?
See this page about how to manually construct H5P packages and follow the same process for each repo.

You need to download the repo Zip file. Decompress into a temp directory. Delete the LICENSE, README.md, and .gitignore files

Create a new folder to hold the rest of the files like library.json, CSS, JS For the H5P editor, name it H5PEditor.ScormFile. For the h5p-scorm-master, use H5P.Scorm:

Outside of the new folder, create an h5p.json file.

For the H5PEditor.ScormFile, use this:

{
  "title": "H5PEditor.ScormFile",
  "language": "en",
  "author": "Pavlo Shevchuk",
  "license": "cc-by-sa",
  "preloadedDependencies": [
    { "machineName": "H5PEditor.ScormFile", "majorVersion": 1, "minorVersion": 0,"patchVersion": 8, }
  ],
  "mainLibrary": "H5PEditor.ScormFile",
}


for the H5P.Scorm, use:

{
  "title": "SCORM/xAPI",
  "language": "en",
  "license": "cc-by-sa",
  "preloadedDependencies": [
    { "machineName": "H5P.Scorm", "majorVersion": 1, "minorVersion": 1, "patchVersion": 16, }
  ],
  "mainLibrary": "H5P.Scorm",
  "embedTypes": ["div"]
}


Now Zip up the right h5p.json folder and the H5PEditor.Scormfile or and the other with H5P.Scorm directory. Zip compress each, naming the editor file H5PEditor.ScormFile.h5p and the second library H5P.Scorm.h5p.

Creating H5PEditor.ScormFile.h5p.

So create Zip file renamed to H5PEditor.ScormFile.h5p. Inside of that you have a folder named H5PEditor.ScormFile with contents of the Git repo, https://github.com/pavloshevchuk/h5p-editor-scorm, specified files removed. You also create a h5p.json file with the code provided. Place it in the Zip file but outside the H5PEditor.ScormFile directory.

H5PEditor.ScormFile.h5p
├── H5PEditor.ScormFile
│   ├── library.json
│   ├── scripts
│   │   ├── scormFile.js
│   │   └── scormFileUploader.js
│   └── styles
│       └── scormFile.css
├── H5PEditor.ScormFile.h5p


Creating H5P.Scorm.h5p.

Create a second Zip file renamed to H5P.Scorm.h5p. Inside of that you have a folder named H5P.Scorm with contents of the Git repo: https://github.com/pavloshevchuk/h5p-scorm, specified files deleted. Place the icon.svg file in a directory called content, inside the Zip file. You also create a h5p.json file with the code provided. Place it in the Zip file but outside the H5P.Scorm directory. The Zip file contains this structure:

H5P.Scorm.h5p
├── content
│   └── icon.svg
├── h5p.json
├── H5P.Scorm
│   ├── css
│   │   └── scorm.css
│   ├── js
│   │   ├── api
│   │   │   ├── api_1_2.js
│   │   │   ├── api_2004.js
│   │   │   ├── datamodel.js
│   │   │   ├── debug.js
│   │   │   └── flash_detect.js
│   │   └── scorm.js
│   ├── library.json
│   └── semantics.json


You should now have two H5P files and you will now be able to update them at the H5P admin libraries page:

admin/content/h5p


Here's a repo containing the files I made following these instructions:
https://github.com/jackrabbithanna/h5p-scorm-libraries