about simltaneous connection in workers

hey, I am trying to understand how is this simlutaneous connection messured. if I have a worker. let's say an api to do req/res fetching database. when a request comes in the for that req cloudflare spins up a v8s env for running the code right? so for 1000 req let's say 1000 per second and my worker 6 connections open simultaneously how is that counted. so for 1 req I can query my database 6 times max is it ? or it's 6 query at the same time max? please explain how exacle it's calcualted thanks