Well, it could be about them being classmates in high school. Maybe Vegeta is the new, mysterious transfer student who catches Bulma's attention. She might be the popular girl with a love for science, and they start off bickering but gradually develop feelings as they work on a school project together.
At first, they might be at odds. Vegeta could be seen as cold and aloof, while Bulma is more outgoing. Bulma might try to befriend Vegeta, but he brushes her off. However, as time goes on, he starts to respect her intelligence when she helps him with a difficult class assignment.
Often, one key element is the relationship dynamic. Vegeta's gruff nature against Bulma's more headstrong and intelligent personality makes for an interesting contrast.
Vegeta's proud and somewhat abrasive personality would likely clash with Bulma's more outgoing and inquisitive nature at first. Vegeta might see Bulma as too nosy and she might think he's too standoffish. But over time, Vegeta's determination could inspire Bulma, and her creativity and intelligence could make Vegeta respect her more. They would have to learn to compromise and understand each other.
Well, there might not be a lot of official high - school - related stories about them. But one could imagine that Vegeta, with his pride, would be a bit of an outcast in high school. He might be the tough guy that no one really understands. Bulma, on the other hand, would probably be the smart and popular girl. Maybe she'd be in the science club or something. And perhaps Vegeta would be secretly impressed by her intelligence.
Well, in this high school setting in fanfiction, Bulma could be the popular girl who is into science and technology. When she meets Vegeta, who is probably the new and mysterious transfer student. Their first encounter could be a clash of personalities. Vegeta might be dismissive of her at first, but Bulma's determination to get to know him better could lead to an interesting friendship or even more. Maybe she tries to figure out his strange powers, and that draws them closer.
In this kind of fanfiction, they might start off as rivals. Vegeta's proud and competitive nature could clash with Bulma's intelligent and headstrong personality. Maybe they get paired for a science project and initially bicker all the time but gradually start to understand each other.
There's no indication in the official story that they had adventures together in high school. Vegeta was mainly concerned with his Saiyan pride and training, and Bulma was more into her scientific pursuits on Earth.
In a vegeta x bulma high school fanfiction, it could be that there is a school dance coming up. Bulma is determined to go with the most popular guy in school, but Vegeta, who has a secret crush on her, decides to enter a dance - off to win her over. Along the way, they face challenges from jealous classmates and misunderstandings, but in the end, they realize their true feelings for each other.
Perhaps it could be the school bully. This bully might be jealous of Vegeta's strength and popularity among some students, and also of Bulma's intelligence and charm. So, he tries to create problems between them, like spreading false rumors or trying to sabotage their school projects.