It's your responsibility to check local laws, but in most jurisdictions, it's entirely legal to scrape publicly available websites. Additionally, pokemondb.net does not "own" Pokemon facts and stats, so the purpose you describe will be acceptable on our end.
The only request on behalf of this website would be to avoid scraping so quickly that you burden the server. This website's robots.txt asks you not to send more than one request every four seconds, so you should adhere to that in your project.
If there is no specific requirement to build a scraper, you might find PokeAPI more ergonomic to use. Knowledge of REST APIs is very helpful to have in your toolkit as an IT student.