The "Rewards" tab shows your playtime milestones (up to 300 h, reset every 30 days); reached milestones are given to you automatically.
Hourly bonus: it is not handed out by itself – when it is ready you get a notice and claim it with the "Claim" button in the tab or with /reward. The next hour only starts counting once you have claimed it.
Every tier contains staggered bonus loot: early on resources, meds and ammo, then components, explosive ingredients and armour. From 100 h it gets much bigger and rarer – weapons, C4, rockets, metal armour, large amounts of HQM and a random loot pool with rare finds. 300 h crowns it all with an M249, LR-300 and a level 3 workbench.
The hourly bonus grows with your total playtime: at 10, 25, 50, 100 and 200 h it goes up one tier (more and better extra items), from 100 h there is also a small chance for a rare item such as an AK or C4. Your current tier is shown on the "Hourly bonus" card.
On top there is a daily login bonus with a streak: a bit more scrap every day, plus a buff on day 7. Skip a day and you start again at day 1. /daily shows your streak.
Commands
/daily