It’s not scripted but it’s led. But scripted reality means they set stuff up. There are a few scenes that they decide what to say such as in MIC opening where they have two people tasting champagne and they say something condescending about prosecco etc or a phone call.
But most of it is their own words although thinks things to address by producers in the set up meet. Most of the realtionships and fall outs are real.
Live reality shows such as this and bb are harder to do that with due to time and reshoots not being viable for any length of time so it will be more natural but they will be encouraged a lot.
Nothing like The Bachelor/bachelorette where they are full on manipulated (and it’s fascinating).