Network dependant, each settlement should be processed within 24 hours only for Bitcoin and Monero settlement options. In your risk settings, under your settlement options, you have control over the number of required confirmations before a transaction is accepted and settled.
A “Low Risk” setting would require 100% confirmations, whilst delaying the time it gets settled into your account. Whereas "Medium Risk" setting is a balance between security and speed. Compared to a “High Risk” setting which would require the minimum amount of confirmations, while speeding up the settlement process.
For more information on Fiat settlement options, please refer to BitPay’s documentation at the following page: https://support.bitpay.com/hc/en-us/articles/203010416-When-do-account-settlements-occur-