If you are not already comfortable with video-editing/making software, a good place to start is Microsoft PowerPoint - the video shown here illustrates how you can create a video with audio and visual content in a fairly efficient manner
That being said, there are potentially other tools you might find useful or needed, depending on your workflow and how exactly you want your video to look/sound/feel. These tools are also useful for creating the content that you will use within the video itself:
Video/Audio/Screen-Capturing: OBS Studio is free and easy to use
Media File Creation/Conversion/Editing (pics/gifs/vids): EZGif.com does a lot more than just make gifs; trim/crop/speed-up videos, and more!
Example: MIT Engineering Student Application Portfolio Video
Summarize in a 1-2 minute long video between:
A high-level overview showing off all the stuff you have learned & accomplished during this course
Think about this being equivalent to a "highlights reel" of a football game
This is useful for several reasons:
Teaches you how to succinctly document & present the key components of work projects you complete
Allows for excellent self-reflection on the course as a whole, from where you began to where you are now
Acts as a portfolio piece that you can use to show your capabilities to potential employers/businesses
Videos like this are used commonly now by MIT Engineering departments to determine potential student acceptance