You need to give more details of the problem as it is not clear what you want help on. Google cannot be deleted or removed as it is just a search engine and is accessed via a browser. If you have lost your Gmail account then you just need to add it back into what ever email system you are using on your computer or phone. Unless you have accidentally deleted you account - which is not easy to do accidentally - then it should still be there. Let us know what you did to cause the problem.
Answers & Comments
You need to give more details of the problem as it is not clear what you want help on. Google cannot be deleted or removed as it is just a search engine and is accessed via a browser. If you have lost your Gmail account then you just need to add it back into what ever email system you are using on your computer or phone. Unless you have accidentally deleted you account - which is not easy to do accidentally - then it should still be there. Let us know what you did to cause the problem.