Usually, it takes about 1 day. It depends on what time you make the payment. If it's in the morning, usually we'll receive the amount on the same day. Otherwise, it will go to the next day.
In general, the maximum period is 2 business days. But usually, it takes about 1 day.
If you are in a rush about the BTC rates, just send a copy of your receipt for SEPA payment.