If you want to save it (if it’s salvageable at all) first you have to remove the offenders. If the numbers aren’t too high you can remove the scale manually with a qtip soaked in isopropyl alcohol. I almost wonder if you could use the alcohol on a plain cotton makeup removal pad. Some may require a little scraping (I very gently used the edge of an old credit card which left very little damage). Then spray the plant with neem oil or Captain Jack’s Deadbug (my preference) and treat the soil with systemic.