DAE is high functioning nad has problems navigating "adult tasks"?

Today i had to do an adult task without my parents as they were working. I had to complete a formulary to renovate a thing i had no idea even existed with the phone. It was really awkward because i have NO IDEA what any of the terms throwing at me meant, i felt like an idiot.
Man how do NTs even remember all of this stuff, i am to busy engaging with my special interest to bother lol. Maybe im not as high functioning as i though, i can't really even hold a job without getting an anxiety attack.