Gift Deed from the US

Hello everyone, I want to know if anyone has shown a gift deed for express entry from the US? When I look up online, I am able to a lot of information about how to prepare gift deeds in India but I couldn’t any information about how it’s done in the US? If there is someone, please let me know. Last month, my relative (who is also in the US) made a huge transfer into my bank account and I need to know, what is the process of getting a gift deed in the US.

I really appreciate your help, thanks!