What the number is good at
A consistent score makes broad comparisons easier. It can show which passports have more destinations recorded as visa-free, visa on arrival or qualifying electronic access within the same dataset.
Arton Capital, for example, describes its Mobility Score using visa-free, visa-on-arrival, eTA and qualifying fast eVisa categories, while Henley excludes government-approved eVisas from its visa-free score.
What disappears inside the total
Stay length, passport-validity rules, trip purpose, residence status, transit points and border documentation do not fit neatly into one mobility total.
Two passports with the same score can also reach that score through a different mix of visa-free, arrival and electronic-access destinations.
The useful workflow
Use the score to discover and compare. Use Where can I go? to shortlist destinations. Use the destination guide to understand the trip. Use the official authority to make the final decision.