There is a difference between saying you can do bookkeeping and holding a verified badge for bookkeeping in a specific trade. The first is a claim. The second is something a merchant can act on without meeting you.
What a vertical badge is
A vertical badge attaches a verified skill to a trade context. Not simply "customer service" but customer service in a salon; not simply "stock control" but stock control in a butchery. It is earned by exam and shown on your public profile.
Why the trade context matters so much
A merchant posting work is not thinking in skill categories. They are thinking about their shop. A salon owner looking for help wants someone who understands how a salon runs, and a general skill list requires them to make that leap on your behalf.
The badge makes the leap for them, which is often the whole difference between being shortlisted and being scrolled past.
They carry real weight in ranking
Earning a verified skill badge is one of the largest single contributions to Profile Strength, and Profile Strength is how applicants are ranked when a merchant reviews them. Only a record of good merchant ratings counts for more — and that requires work you have already done.
The economics are deliberate
Each skills exam attempt costs $5, paid in cash, with a seven-day wait between attempts. Pass rates are published per badge, so you can see the odds before you pay. Nothing about a badge can be bought without passing the exam, which is what keeps the ranking honest.
From applying to being found
The real shift is directional. With no verified badges you find work by applying. With badges in a trade, merchants searching for that capability can find you — which is a completely different position to be in.
Choosing which to take
Look at what businesses near you actually are. A badge in a trade with three shops in your area is worth less than one in a trade with thirty, however interesting the subject.