I don't think there's a "best" way to score leads.
Scoring leads helps you prioritize accounts that publicly show they're more relevant for your solution vs others who you might not be so sure about.
e.g, if you have an interior decor biz, you want to scrape google reviews of hotels where someone has either strongly or loosely complained about the furniture, drapes, lighting, or sheets.
You can assign an arbitrary number for Hotels with mentions in google reviews, another figure for hotels based within x Kilometer radius (if you're a physical biz), and another number for hotels that have a GM, but, maybe, no operations manager.
The sum or difference of these scores should give you a picture of which leads you want to have multiple touchpoints with vs who you might just email once.
It's all subjective
