You can try searching the number online or just the web address in Google so you don't actually go to the website.

But yeah, if you're not expecting somebody to give you any BTC or don't have your address out there much, it's a scam. This is probably the equivalent of something in your spam email folder saying you have millions of dollars ready to be deposited into your account and they just need your personal info :).

Delete and move on. Even block the number in case it continues.