Don't you worry about these stats. That's SEO's stuff... Your target is the customer that goes for the name, and normally they don't care at all about any SEO statistics. If they like the name - they will buy it no matter of spam score.
Host it repair it if it is of concern if leave it offline will just display same messages till hosted. Truth is it will fix itself when you do host it with some actual content. Real issue is others will never delete their content so once it is listed everywhere as a problem it relies on a few tweeks. I have sites to help identify your problems eg traffic.tips Ether that forget about it and stick to domaining it sux to know anything.
I would at a minimum install Google tag manager, Google analytics and Google Adsense, you don't even have to display ads just install site kit if using Wordpress will help your spam score a lot.