Next step will be for you to take a citizenship test. For this, you will receive a formal email on your registered email address used in the citizenship application. this will take some time though - typically between 2-3 weeks.
On the tracker however, you may receive an update before that. It will say that the next step is on you to take the test. At this time, you might not have received your email. It is seen that the tracker updates first and in 3 days-1 week, you get the formal email invite.
You will get a test window of 4 weeks to take your test. Its up to you when you take it.
here is a link to the official guide.
https://www.canada.ca/en/immigratio...ate/publications-manuals/discover-canada.html
all information is mentioned in the email- do not panic