An object is an instance of a class that has its own set of data or attributes and can perform certain actions or methods. In other words, an object is a particular occurrence of a class that has been created and can be manipulated and interacted with in a program.

Read more here: https://learn.microsoft.com/en-us/dotnet/visual-basic/programming-guide/language-features/objects-and-classes/

Or watch a Video: Introduction to Classes and Objects - Part 1