Mock trading = demo Money
in simple words, it means that you get the amount of fake money(which cant be withdrawn) to check your trading skills and learn and then you can start actual trading with real money.
Want to try Mock trading ?
Go to My profile (@Harshal NFA ) -> tap on Copy trading -> tap on Mock copy -> $10,000 mock copy started

auto $10,000 copy trading of fake amount will be start and you can view that in copy trading tab about how much money you gained or lose based on the creator's copy trading you chose. if that mock trading shows you satisfactory gain you can join actual copy trading with small amount of money.
-> why Choose mock trading first before using copy trading?
No real money is needed
No risk of losing money
Learn at your own speed
Try new strategies
Improve decision-making
-> Can i choose other traders to mock copy?
Yep, You can as long as someone leading Public copy trading [tip : always choose the copy trader who uses low leverage like (2X to 5X) ]
-> is there limit of number of mock copy you can do?
No, there is no limit but choose only some of them otherwise you will be confused
Is this promotion ?
nope i get nothing if you start mock trading or not and you invest nothing if you start mock trading or not, you can always choose other traders mock trading, explained by my profile so that you can easily navigate to it,
most of the prople don't mention copy trading in binance square due to risk of getting hate comments when someone actually copy trade instead of mock trade while the lead trader get absolutely nothing