The Spam Score is a Moz metric. It is directly affected by "Link Building".
1. Stop your link building.
2. Go and analyze your backlinks and remove the ones from bad sites that you put links on. It is these sites that are making your spam score this high.
Most folks don't really understand the difference between bad sites and good sites.
If anyone can leave a link on a site, then that site really isn't going to help rank your site. In fact those sites will just make your spam score even higher.
Since you have access to Moz Pro then follow these directions....
Now after you fix this I would suggest you go and learn to properly build links.
Start here https://neilpatel.com/