Transferring SERVICE_ACCOUNT.json to config folder

Hi there.

Literally in my first few hours playing with this.

I installed home assistant using the raspberry pi SD card creator and plonked it into a pi 4b. It works. I’ve set it up and now I’m following these instructions for google assistant integration using google console and google cloud platform.

I’ve downloaded the private key I created and now I have to save it to the config-folder. My problem is that I have no idea how to transfer the private key JSON file from my Mac to the config-folder in the raspberry pi? I’ve looked in the web interface at 8123 and can’t see any way of doing it. SSH?

Thanks in advance.