You should typically receive your email within 24 hours. If you have not received it be sure to check your spam filter. If you still cannot find it then you should contact sales or support.
Welcome to KnownHost. I checked our order queue and see you placed yours and paid at 6am EST roughly. We build VPS's from 9am-11pm EST 7 days a week so your logins should be sent within a few hours. Hope this helps.