Missed payment
Even when you've already paid, missing a payment will still show on your report as "Missed payment". This will stay on your report for 5 years. Most likely, your score will go down when it's added.
Late payment
Paying late reflects the same as missed on your credit report. When you pay late, it's missing paying on the date agreed with the provider.
Even if you bring your account up to date, missed or late payments will stay on your report for 5 years.
Both missed and late payments will have less impact the older they get, and you can usually recover from them over time. You can see if you have missed or late payments in your payment history section within Credit Health.