Question: how to transfer data from windows phone to google pixel?
Answer: Charge both phones.
Sync your BlackBerry or Windows Phone to your Google Account. To check whether you have a Google Account, enter your email address. If you don't have a Google Account, learn how to make one.
Insert your SIM card into your Pixel phone. Learn how. ... 
Turn on your Pixel phone.
Tap Start. Set up as new.