I can't earn BAT tokens

@Mehedi25 there is talk of perhaps having Bangladesh and some other countries be able to use ZebPay in the future. But more than anything Brave is shifting away from custodial partners like Uphold or ZebPay and instead going for direct on-chain payouts. They have been building it out for a little while now and are adding new people to it each month. It is still invitation only at the moment. You may want to read through PSA: Current and upcoming changes to Rewards and Creators for more details on that and some other changes.