Hello, I finding website where I can buy bitcoins with credit cards without registration. Only enter e-mail and bitcoin wallet.
You are not going to find a website like that, and even if you did found a site like that, you can be sure it will close its doors very fast since scammers will use it to buy bitcoin with stolen credit cards.
Absolutely, no site like that because to safety and comfort of the registration must be done, maybe to avoid the scam. Not only buy bitcoin with a credit card but with others such as bank transfers and others also will be required for registration. So I think that OP is looking for does not exist, if exist would have been very unsafe. I personally never find a site like that.