I am really stugggling to keep up with hydrogen production for power ( I am using water electrolysis) , I am using should be a be burning something else ? , also is two turbines to one combustion engine correct ? should I be using heat exchanging next ? not really sure how that will work ,when do I need to upgrade pipes to pipes 2?

Just to make sure we're on the same page, hydrogen is only an energy storage solution, to complement variable wind or solar energy generation methods that actually create power. Burning it doesn't create more power than it took to electrolyze it. The priority system on electrolyzers and turbines allows them to be configured to function like a vanilla accumulator. If you don't have enough hydrogen, you may just need more wind turbines to fill your hydrogen "accumulator" system. Make sure you have your electrolyzers set to Surge mode and your turbines set to Backup mode, otherwise the system won't act like a proper battery and you'll have a bad time.

Nullius doesn't have a lot of simple ratios like exactly 2:1. To calculate a ratio, look at the recipe you're using for combustion. Combustion Chamber 1 has a crafting speed of 1, and Hydrogen Combustion 1 produces 440 steam per second. Hover over the steam fluid icon, and you can see that Nullius steam has an energy density of 6kJ per unit. So a combustion chamber 1 is producing 2640 kJ worth of steam per second. Now look at an Open Turbine 1. It has a max power production of 1000kW, and an efficiency of 90%. That means 1 combustion chamber could support 2.64 turbines worth of steam if they were 100% efficiency, but you need to divide by 0.9 to account for the inefficiency (they don't get all the power, so they need to consume a bit more steam to reach their max power rating). So it works out to 2.933, or just under 3 open turbine 1s per combustion chamber 1s. 3 to 1 would be a good ratio to use for them.

A further point. The concept of a fixed ratio between combustion chambers and turbines seems to be assuming a particular build style for your hydrogen battery. There's nothing wrong with that build style, to be clear, but you should understand the implicit assumptions to make sure you aren't overlooking other possibilities. In order to function as a battery your energy storage system needs tanks somewhere to store the fuel. Hooking up your combustion chambers directly to turbines implies that you have 2 sets of tanks, one storing hydrogen and one storing oxygen, and you burn the hydrogen as backup power is needed. But another design would be that you have your combustion chambers burn the hydrogen and store the steam. The steam is less energy dense than storing it as hydrogen + oxygen, which require fewer total tanks to store the same amount of energy, though some like the simplicity of having only one set of steam tanks, even if it takes up more total tanks. In this latter design, instead of matching your combustion chamber ratio directly to your turbine's consumption rate, you'd instead be matching it to your electrolyzer's production rate, which is a subtle but important difference. Your electrolyzers and turbines scale according to different parameters of your energy storage setup.