Stripe and Paypal questions

Hi,
thank you for your support,
I managed to setup paypal and stripe on my website following your documentation.

When someone collect the fund from his project, where he will have the money on stripe or paypal?
I configured stripe and i tried one payment in live by 1 dollars and it worked on the website but i can’t collect the fund, i get error message, i will attach here.
It is ok to use the Standalone account from stripe?
Also with stripe i will have admin commission? if yes i need to setup something on my account?

Thanks
sorry for many questions but i need to make it clear.

Kind regards