I got a text saying I won a iPad from December giveaway

Hello ~ Who sent you a text? We are fellow forum users just as you are and I can assure you we don’t know anything about the texts that you receive. It is very likely a scam. You can go to upper right hand corner and click on Get Support or link below to ask Apple about it. Did you give out any personal information via this text?

How to Contact Us - Apple

~Katana-San~

It is probable that this is a scam text as these are pretty common. You should contact your phone provider and report the number as spam.