If you want to stream all of the FIFA World Cup games at home (or at your desk) without a real cable subscription, DirecTV Now looks to be your cheapest option at the moment, if they include Fox in your area.
The service’s base package includes Fox Sports 1 and Fox, which together will broadcast every World Cup match, though Fox is only available in certain markets (use this tool to find out if you’re covered). It normally costs $35 per month, but you can get your first three months for just $10 each with promo code YESNOW3. That’ll auto-renew at the regular price after the promotional period, but you can cancel any time, including after your first month, meaning you’d only pay $10 out of pocket for full World Cup access.
If Fox isn’t available in your area, Sling TV has another $10 option with every match that doesn’t rely on Fox, though commentary will be in French and Portuguese. Pretty much every country has more exciting soccer announcers than ours, even if you don’t understand the language, so maybe this is a plus! But if you’re primarily watching on mute at your desk at work, it doesn’t really matter.