Could you give me an guide for getting App Id with PayPal in case of Fundraising.

Hey!
I hope you having a good day!
I am currently preparing for creating fundraising community for Japanese.
Then, now I am translating your PDF document to Japanese, but it is a bit out of date.
When I tried to get app Id, i couldn't figure out completely, because x.commerce is now paypal.
So could you give me an guidance to point how should we wright the information related to the screenshots.
I am now creating supporting document, so I want to check.

KIng Regards
KAZUKI