Hello @AhmedWaleed ...
Your instructor is ultimately the one who will be setting up the groups for you in your course...if that is something your instructor wants as part of his/her course. When you are assigned to one or more groups in a course, then you will see a "Groups" icon on the far left-hand side global navigation menu within your school's Canvas environment. You can read more about this by checking out the following Guide:
How do I view my Canvas groups as a student? - Instructure Community (canvaslms.com)
Refer to the information within the light blue box at the top of the page as well as the image under the heading "Open Groups" to see an example of what the "Groups" icon looks like.
If you are not seeing the "Groups" button in your course, and you know that you should be a part of a group, then please reach out to your instructor directly. You can do this by following the steps in this Guide:
How do I get help with Canvas as a student?
Hope all of this will be helpful to you!