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Hey there tyjana299,

Thanks for visiting the Apple Support Communities. If you are unable to get your Apple Watch to power on or charge, you can use the steps below. They are taken from the Apple Support article If your Apple Watch won't charge or it won't turn on - Apple Support, which addresses this issue directly:

Find out if your Apple Watch is charging

When you connect your Apple Watch to its charging cable and power, a lightning bolt  should appear on the screen.

If your Apple Watch with watchOS 9 is in Low Power Mode, the icons, time, and day shown below all appear in yellow.

If your watch requires charging, a red lightning bolt  appears on the screen. (You might need to press the side button to make the watch face appear.) When your watch is charging, the red lightning bolt  changes to a green or yellow lightning bolt . If your screen is blank or the charging cable icon and a red lightning bolt  appear on the screen, charge your watch for up to 30 minutes. 

Get help if your Apple Watch won't charge

If your Apple Watch won't charge, or a message on your watch says that charging with this accessory isn't supported, try these tips: 

• Make sure that you're using the Apple Magnetic Charging Cable or USB-C Magnetic Fast Charging Cable that came with your Apple Watch.

• Make sure that you plug the Apple Magnetic Charging Cable or USB-C Magnetic Fast Charging Cable all the way into the USB Power Adapter, then make sure that you plug the adapter all the way into a power outlet.

• If you use a third-party charging stand, use the charging cable that shipped in the box with your Apple Watch.

• Completely remove any plastic wrap from both sides of the charger. 

• Make sure that the back of your Apple Watch and the magnetic charger are clean.

• Reposition the back of your Apple Watch on the charger. When the charger's magnets align correctly with your Apple Watch, a green or yellow lightning bolt  should appear on the watch face.*

• Try a different Apple Watch Magnetic Charging Cable or USB-C Magnetic Fast Charging Cable, and a different USB Power Adapter. If your Apple Watch is out of power, you might need to wait a few minutes for the lightning bolt  to appear after you start charging your device. 

• If your Apple Watch still won't charge, force it to restart. Press and hold both the side button and Digital Crown for at least 10 seconds, or until the Apple logo appears.

Should you still not be able to get your Apple Watch to power on, please reach out to Apple Support directly. They will have access to additional tools and resources to further assist moving forward. You can do that here: Get Support.

Have a lovely day.