There's no time limit on the evaluation — trade at your own pace to hit the 8% target. Once you pass and your account is funded, payouts are reviewed on a 14-day cycle measured from the date your account is funded. You must remain profitable, stay within all rules, and pass review. A new withdrawal window opens every 14 days after that.
Once funded, your account also becomes eligible for automatic scaling based on clean payouts — see the profit cap and scaling plan article for the full milestone table.