Welcome to the Fitbit community, @Tamos1911!
Sad to hear that you're having an issue with your Sense 2.
As there is a chance that your device's battery is completely discharged, I'd suggest giving it a full charge to see if that will get things fixed. If it won't charge, please have a closer look here:
Why isn't my Fitbit device's battery charging?
If your Sense 2 is fully charged and still doesn't come on, please keep it's button pressed for around 10 seconds until you'll hopefully see the Fitbit logo on it's display.
Finally, if you have access to your device with your Fitbit app, I'd recommend changing the clock face of your device as mentioned here:
How do I change the clock face on my Fitbit device?
If your Sense 2 is working fine after that, you can switch back to the clock face you had selected before.
Stefan
Charge, Charge HR, Blaze, Versa, Versa 2, Charge 5, Charge 6, Versa 4, Aria, Aria 2, Pixel 4a, Pixel 7
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