There are 2 types of Bitcoin withdrawals, Standard and Lightning Network withdrawals
Standards Withdrawals are dependent on the congestion of the network. Confirmation of withdrawal can be as soon as 10 minutes to a few hours. You can track your withdrawal by clicking Activity on your dashboard. From there, find and select your Bitcoin withdrawal and click on the On-chain tag at the top of the modal to track your confirmations:
Note: You can choose to either withdraw via standard (on-chain) Bitcoin withdrawals immediately or schedule your withdrawals to process Monday at 11:30 UTC.
When you initiate a Lightning withdrawal, your Bitcoin will be in your Lightning Network wallet account immediately