The competition started last month and — lucky you — there's still time to enter, though you'll have to be a resident of the US, Canada, UK, France, or Germany for a chance to win.
Enter with your Microsoft account and complete little quests like setting Bing as your default search engine, or downloading the Bing app, or doing all sorts of other Bing-things to increase your odds of winning. And hell, why not? It's not like Google and its blundering AI Overviews make for all that amazing of a search engine these days.