Rm doesnt start in win 10

[eclectic-tech]

Rainmeter starts automatically on Win10 for most users...

If it does not start on your PC, then you need to look at your PC settings:
Make sure a shortcut to Rainmeter is in your "C:\Users\{yourusername}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"
Check if Windows Defender settings are protecting files; See: Windows and Security post for details on how Rainmeter works and where file access is required

Saying "it doesn't work for me" will not help us, help you, find the issue with your PC.
Please give us as much detail about where you installed Rainmeter, your version of Rainmeter, your version of Windows, any error messages, etc.