What are bitcoin cloud mining rewards and what is settlement interest $,$settles every $24$hrs$,$ who gets settlement interst

here is an example:

BTC Miner S$21$ Pro

$$3,000\mathrm{.}00$

$/3$ Days

Contract Term:

$3$ Days

Contract Price:

$$3,000$

Daily Rewards:

$$66\mathrm{.}00$

Fixed Rewards:

$$3,000+$ $$198\mathrm{.}00$

Settle Interests:

Every $24$ Hours