Hi there, I'm thinking of making a game, and I was wondering how it would look when I were to recieve a payout from paypal. I don't use this app, so I'm just looking for clarification. Do I recieve individual payments from each accoun that donates, or is it one lump sum from itch.io itself? Also will the information of my game and my username be included in the payment. I don't really know if I want this on my financial record incase the game isn't that good...

I recommend that you carefully read the Itch documentation on how the payment system works https://itch.io/docs/creators/payments

If you collect money directly (Direct to you method), then customers must have access to your PayPal business information, because they are paying you directly. Every time they buy something from you, since they buy it from your PayPal account, you receive payment instantly, but you are responsible for paying taxes, returns, etc.

The most commonly used method is the "collect by itch" method. People buy from the Itch "store" and not from you. Your data is not shown to customers, but the money is collected and stored by Itch, not by you.
You must request Itch to make a payment or transfer of the accumulated money, but that is a manual process that you must request each time you want to withdraw the accumulated funds.
To access this method, you must answer the Itch tax survey, with your real data, since they must validate your tax information before they can make any payment to your account.