Turning Off Worksheet Tabs

@Philip

Thanks for pointing out my error; I did not make that distinction.

PFL

If you simply want to "provide more vertical space in which to display the content of the workbook," My Excel Toolbox includes the following four macros: ToggleFormulaBar, ToggleScrollBars (and worksheet tabs), ToggleStatusBar, and ToggleFullScreen. Each will enable or disable the indicated feature. Here is an abbreviated example:

Sub ToggleScrollBars()
    With Application
        .DisplayScrollBars = (Not .DisplayScrollBars)
    End With
End Sub

See https://sites.google.com/view/MyExcelToolbox
The WindowDressing macro can also toggle row/column labels (see my first comment below).

Why not just extend the scroll Bar to cover the sheet tabs

@PFL, what you are describing is not hiding the tabs, but is hiding the actual worksheets. This tip is about showing or hiding the tabs at the bottom of the Excel window ...

@Al
My Excel Toolbox includes the SheetsDialog macro, which displays the sheet activation dialog at the bottom-left corner of Excel's window (similar to right-clicking a scroll button at the left side of sheet tabs). Here is an abbreviated version:

Sub SheetsDialog()
    Dim X, Y
    Const PxPerPt = 96 / 72
    With Application
        X = .Left * PxPerPt
        Y = (.Top + .Height) * PxPerPt
        .CommandBars("Workbook tabs").ShowPopup X, Y
    End With
End Sub

See https://sites.google.com/view/MyExcelToolbox

Hiding tabs can also be accomplished by selecting several, or all, and right clicking; menu choices,one of which is hide.Select several non contiguous tabs using CTRL left click process, and selecting a range of contiguous tabs by either select first in range, then SHIFT left click at last of range, or mouse press left click and sweep range of tabs, unclick.Unhide by right click an active tab and select from nenu.

CTRL+PgUp and CTRL PgDn

If you turn the tabs off, how do you navigate between sheets?

This is a great tip! It really worked for me as it is a more effective way of hiding a whole bunch of tabs with one single action.
Thank you so much for al the great tips.

Sheet tabs are toggled ON/OFF by the Window property DisplayWorkbookTabs. For the active workbook, the following VBA statement will toggle them:
    ActiveWindow.DisplayWorkbookTabs = Not ActiveWindow.DisplayWorkbookTabs
My Excel Toolbox includes the WindowDressing macro, which will toggle several such properties for the active worksheet or all worksheets. A screenshot is included in my recent comment added to the following Tip:
https://excelribbon.tips.net/T009308_Controlling_Where_You_Edit_Cell_Contents.html