This largely depends on the type of certificate that you purchased and your response times. No matter which type of certificate that you purchase, the Certificate Authority (CA) will be contacting you directly and will only proceed with next steps upon your response. For Domain Validated (DV) certificates, these can typically be issued in a matter of minutes to one business day. For Organization Validated (OV) certificates, these tend to take around 2-3 business days to be issued. And for Extended Validation (EV) certificates, these usually take between 3-5 business days to be issued.