If you see a COPR number in your MyCIC account, then usually within 1-3 weeks you should get an email with COPR. It can take longer in some cases as IRCC has to verify that you are physically in Canada before a COPR can be issued to you by email. In some Cases IRCC may send you an email confirming that you are in Canada. Also, if your dependents are not in Canada, then they will have to be send a PPR email to submit their passports around the same time you receive the COPR.
The instructions for the PR card, i.e. where to send your picture will be in the email.
All you have to do is update your SIN. for most provinces, when your health are expires, you can get it renewed by showing the PR card / COPR, you do not need to anything immediately. But check with the provinces you are in.