Hi Sankell and welcome to GoY, if you are asking about purple sprouting broccoli it is early yet. If you have no flower buds it hasn't bolted

If there are no flowers, then by definition it hasn't bolted. The worst thing is when broccoli or calabrese produce florets when still small plants. Depending on what you sowed or planted, it will either produce the crop in the autumn or as MG says, next spring, if it's purple or white sprouting broccoli.

I know that some varieties need a few cold nights to trigger bud formation.