Help) Please

When I can use "have+got". What does it mean?

This is bad English!  It should be "Have gotten".  In the example in the comment box, it should be, "I have to get those new shoes". "I have a puppy".  All those examples are not proper English and should not be used in formal settings.

Here are more examples.  Although you can use it informally, the word, "get" is overused.  Instead of saying, "I got this present from my father", it is better that you say, "I received this present from my father".

"I got news for you."  - improper/slangy and implies seriousness to the speech.  It would be better to use, "I have news for you."