Wrong email address and birthday

Hi Deverilkin

Welcome to the Apple Community

Re: put wrong birthday

Update the birth date associated with your Apple ID - Apple Support

says:

If you need to change the birth date for someone below age 13 contact Apple Support. 

Re: and also create mistake on iCloud address

If you need to contact Apple support (link above) about the birthdate, you could ask them about this too.

Else:

If the iCloud address is used as the Apple ID:

See if this article can help: Change your Apple ID – Apple Support

More info:

About your Apple ID email addresses - Apple Support

or

iCloud: About your @icloud.com, @me.com, and @mac.com email addresses - Apple Support

All the best :-)