How can portal setting can be access in theme

After quiring content API /settings/ endpoint I can see the following key-values related to portal setting in returned data.

"portal_button_style": "icon-and-text",
"portal_button_signup_text": "Subscribe",
"portal_button_icon": null,
"portal_plans": [
"portal_name": true,
"portal_button": true,
"comments_enabled": "off",

How can I access these in the theme using @site

I am mainly trying to check the potal-plans and if yearly/monthly is enabled or disabled in Price available at signup portal setting option. Based on that I want to show the pricing table. I am basically trying to access the settings options in the following screenshot.