What version of Java do i need for (x64)

I have new laptop with Windows 10.
What version of Java do I need for (64).
I want to use a database.

You need 64-bit version of Java.

And to use a database, the Java is not necessarily required. If you choose to use not the default HSQLDB, but some other database (like FireBird, or a connection to some external DB).

@mikekaganski is correct about the need for Java. However, you should also be aware certain other concessions must be made. You cannot use JDBC connectors to these DB’s, Wizards will no longer function and possibly some macro functionality depending upon the code. May be more I don’t recall right now.