I always see multiple pages displayed and only want to see one.
As you did not provide sufficient information I try to answer by making a few assumptions. Main assumption: you use Writer.
First make sure you are in Print Layout View
View > Print layout
If “Print Layout” is not visible you are in “Page preview”
View > Page Preview - this is a on-off toggle switch
If you are in Print Layout and still see multiple pages look at the right bottom corner to icons looking like single and double pages and select click the single page icon.
Also make sure that your zoom is set to something like Page Width
View > Zoom > Page Width
If above is not the remedy please provide information. Help the helper to help you!