So the steps I would suggest are below, including installing HPM and the BOND Home Integration application and drivers.
Installing Hubitat Package Manager (optional)
Open the Web Admin interface for your hub
Access Apps Code from the menu on the left hand side of the web page
Click the "+ New App" button on the top right of the page
Open the raw copy of the HPM application code, copy the text displayed and paste into the new application code page opened above
Click Save to save the code on your HE hub
Still on the HE Hub Admin, click on the Apps section on the menu
In the top right of the page, click "+ Add User App" button
Select Hubitat Package Manager
Follow instructions for installing and using HPM on the readme page for the application
Installing Bond App / Drivers
My suggestion is to search for the BOND Home Integration app in HPM:
Open the HPM app on the HE Web UI and choose Install
Search using Tags
Choose the Integrations tag
Find the Bond app from the list and select Install
Alternatively, you can install all the driver and application code from the Git Repository:
Application Code
Drivers
If you choose to go down this route, let me know and I can provide some more steps, but an example of this is outlined in the HPM install, but the drivers are installed under the Drivers Code section, compared to the Apps Code section for the application groovy file.
Either method, HPM or manually loading the code in the Apps / Drivers Code areas, simply get the code onto the Hub. The final step is to install the Bond App.
In the HE Hub Admin, click on the Apps section on the menu on the left of the page
In the top right of the page, click "+ Add User App" button
Select BOND Home Integration
Some notes for the configuration of the Bond application are available on the readme.
Hopefully these notes will get you further down the path, if you haven't got there already.
Simon