I do not see the acf in the api in wordpress

Hello friends, my name is Santiago. I’ve recently started working on frontity and I’m getting familiar with custom fields. Well the point that creates a group of personzalized fields and configures from my wordpress so that it will be shown only on a page that I have created that I call “start” and with that (from what I understand) I would already have access to the acf that are on the page are shown in the api so I can come and consume that data in frontity, but they don’t appear to me. I need help, I’m very new to this.