A domain transfer may take up to 14 days to be completed. It is difficult to provide an exact time frame because the procedure depends on the time it takes the owner to confirm the transfer and the time your current registrar takes to accept or reject the transfer.
You should receive an email notification when the transfer is completed along with all necessary information about the process.
If you are a SeFlow customer, you can check the current status of your domain transfer in your Client Area, Domains tab.