How to clasification

how to make clasification like this?

You will have to tell us what we see in this example and what data you want to use for it, otherwise we cannot really help you.

i use sentinel 2a

This doesn’t look like a land-use / landcover classification - please give more information about your example.

I remember a quite similar question was asked years ago but I cannot find it. Is this for an assignment from a course you attend?

yes for my essay

You still haven’t explained what this map shows. We cannot help you without this information.