You need to stake Bitcoin and/or USDT in your account in order to start earning profit.
When you stake Bitcoin and/or USDT, SALDA starts working for you and will start making you money. The more Bitcoin and USDT you stake, the more profit you can get.
When you stake USDT, your profit will be in USDT
When you stake Bitcoin, your profit will be in BTC
If you are looking for life changing profits, you need to consider staking large amounts of Bitcoin and/or USDT.