'Do' and 'does' are both equally forms with the existing indefinite tense of the verb 'to perform.' Which a single you can expect to use will primarily rely upon the sentence's issue. Their use is sort of equivalent, except for just one occasion where You can utilize 'do' and https://financefeeds.com/wfe-cautions-uk-treasury-on-regulatory-overhaul-that-could-weaken-public-markets/