Have a look at your transcripts, which will typically be submitted with your application... In my experience, these include in-progress and registered courses for the current and subsequent semesters.
In the US, it is totally normal for students graduating in spring 2023 to be applying for grad school for fall 2023, with applications due around December 2022. When applications are due, students will typically have all courses they are taking/will take on their transcript as either in-progress or registered for the next semester.
There won't be any need to separately call out these courses as in progress, it'll be obvious and as expected from the transcripts. Possibly you can mention separately your planned enrollment if your institution doesn't include these on transcripts.
If you are admitted for grad school, your admission will likely be contingent on completing your degree and the coursework you planned to complete at the time of application, but it's totally normal and expected that not all requirements for admission (in particular, completing a bachelor's degree) are complete at time of application.