WePay: Each organization set up with WePay has the option to adjust the automatic frequency of their withdrawals to daily, weekly, or monthly. You can view this information by clicking on the Payouts tab within your account and then clicking on View details.
Once the funds are sent, it takes 2-5 business days (weekends and holidays aren't included) for the funds to arrive.
PayPal Giving Fund: If your organization is both active and enrolled with PayPal Giving Fund, your money will be sent at the end of each month.
If your organization is not enrolled or has not signed up with GoFundMe, then the funds will be sent to their address on file with the IRS via check after 3-5 months.