I have no idea what my score was (or understand the system), but my son and I were identified as at high risk of harm and referred to MARAC. They took various actions via social services; and SS and Police also supported me in prosecuting him twice (he ended up in prison).
I was advised to 'disappear' when I initially took the decision to prosecute him, so we left for 2 weeks - but we had to return as he threatened my cat-sitter and said he would kill the cat.
I was referred to Women's Aid and did the Freedom Programme, and they also supported me around the court cases. The Police used to drive by my house regularly, I had a flag on my home phone and a police mobile phone to call them - both would initiate a fast response. I still have the flag on my home phone 7 years later, and even if I phone 101 they immediately dispatch. I have said I am happy for it to be removed, but as he lives so close to me now, the Police consider me still at risk (I've not seen him in years).
They sent around a safety advisor who told me how to make the house secure - fences around the property, special paint on the top of fences that allowed access to the back, window locks, metal container on the inside of the letterbox (to prevent fire). I couldn't afford security cameras at the time, but got a motion activated dash-cam and parked so it monitored my driveway (I already had a court-imposed restraining order).
Social services were primarily for my son - and I had to sign various undertakings to not allow the ex into my house etc. But they also provided lots of help - tactics to help break that Stockholm Syndrome thing.
After he'd been in prison, the probation service were also really helpful.
A lot of my initial decisions were driven by it being brought home to me how this was affecting my son - and that I now had to keep him safe and secure. Obviously I didn't want to give SS any reasons to take him from me. I had taken back the abusive ex so many times before that.
In general, Police and social work really helped me to keep him away and end things for good, including prosecution, whilst also taking steps to give us some protection.
I remember the Police saying to me that, 'this IS going to end, one way or another. You'll end the relationship; or he'll end the relationship on his own terms, when he feels like it, despite all your efforts; or we'll carry you out in a box. So choose the best way." Maybe that might help your decisions too?