It takes 8-12 days for the initial setup of the bank account connection, but once it’s set up, transfers are processed within standard times.
Remember to TEST your point-of-sale. Then, remember to take the point-of-sale out of test mode. Once you exit test mode. Process a $1 transaction yourself to trigger the 8-12 days. This will prevent you from having to wait for cash after your first actual sale!
HELPFUL SQUARESPACE SUPPORT LINKS
Transaction fees and payment processing rates
Accepting ACH payments with Squarespace Payments
https://support.squarespace.com/hc/en-us/articles/28327348786445-Accepting-ACH-payments-with-Squarespace-Payments