How you match a role
Which of a posting's skills your résumé covers, and which it does not.
How the score works
After you prepare a role, its page shows how you match it: the share of the skills the posting asks for that your résumé covers, with the skills sorted into three groups — on your résumé, skills you have that this draft left off, and gaps nothing in your background supports.
Before you prepare anything, the role's page already splits the posting's skills into the ones your résumé covers and the ones it does not.
Using it well
Add the skills you have but the draft left off. Treat a gap as an honest gap, not a keyword to paste in.
The same panel flags any figure in the draft that your source résumé does not state, so you can edit or remove it before you send.