iPad scam

Hello around 5 months ago at the age of 15 I was on a dodgy website( I won’t go into detail) and a pop up came up saying I have child pornography, zoophilia and many other strange disgusting things on my ipad. Of course I did not have these but the pop up also said they have cameras on me. I went on settings and blocked pop ups then reset my iPad. I have not heard anything since but sometimes when I think about it it still worries me. The pop up said they want £120 from me or I’ll get jailed. I didn’t pay of course as it was clearly a scam but I wasn’t able to use safari until I blocked pop ups as it kept coming up. I’d just like to know how likely it is that this was true and how likely it is that they had cameras on me.