How to set apache permissions for a Postgresql in Ubuntu for a Django project?

Ok so I did not set apache permissions for db.sqlite3 as I intend to use postgresql, but I did give permission to my whole django project folder.

Now, should I just make a postgresql user and a db and assign the credentials in the settings.py and leave it like that? Also, I'm not really sure what to put in the "HOST" and "PORT" entries if that's the case?

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql_psycopg2",
        "NAME": 'mydbname_db',
        "USER": 'myuser',
        "PASSWORD": 'mypass',
        "HOST": "",
        "PORT": "",
    }
}