I got the same text googled it says its a scam.

I just got the same text. I shopped at Target the other day. But I don't remember doing anything to try and win a gift certificate

I just received a text from this number that says "Your entry in our drawing just won you a FREE $1000 Target GiftCard! Enter "815" at www.target.com.trgy.biz and we can ship it to you today!"

I certainly don't remember entering any drawings involving Target anytime recently; I dislike the vagueness of "our" (who are you?); and I really don't like that they try to make a .biz look like a .com (and a reputable .com at that).

Something's fishy...