How do i run this?

Hi guys,

This is properly easy to do but i have no idea how to do it.

So I downloaded something from GitHub that is supposed to help me find codes on a websites.

The instruction are following:
After running edit: $HOME/.config/crunchyroll-guest-pass-finder/accounts.json
The JSON file is an array of dictionaries containing the following fields
Fields are:
Username - username of the account
Password - password of the account
Active (optional) - if set and false, then the account is ignored
Duration (optional)- how to wait after the account is activated until the next account should be activated. Default is 4

How do I run an edit json file. I have no idea.

I hope you guys can help me.