Should I create an array to store data and then use "=" to put data inside .Row, .Column and .Data?

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No, you do not need to.
Use Row property to tell that you want to enter the value for a specific row (this stands for the first index of the "array")
Use Column property to tell that you want to enter the value for a specific column (this stands for the second index of the "array")
Use Data property to enter the value of the cell itself.

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Could you tell me the command to make the data to a bar chart, please?

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See the following topic in MSDN library:
ChartType Constants
http://msdn.microsoft.com/library/en-us/mschrt98/html/vbcstcharttypeconstants.asp

In addition to set the visual type of the chart you should use the ChartType Property - the values of the constants from the above topic are:

.ChartType = 0  && VtChChartType3dBar
.ChartType = 1  && VtChChartType2dBar
.ChartType = 2  && VtChChartType3dLine
.ChartType = 3  && VtChChartType2dLine
.ChartType = 4  && VtChChartType3dArea
.ChartType = 5  && VtChChartType2dArea
.ChartType = 6  && VtChChartType3dStep
.ChartType = 7  && VtChChartType2dStep
.ChartType = 8  && VtChChartType3dCombination
.ChartType = 9  && VtChChartType2dCombination
.ChartType = 14  && VtChChartType2dPie
.ChartType = 16  && VtChChartType2dXY

And here is sample, which I have adopted to VFP from the original VB code
The original VB code can be found at the MSDN:
MSChart Control Example
http://msdn.microsoft.com/library/en-us/mschrt98/html/vbobjvtchartobjectx.asp

In the Init of the MSChart Control put code like the following:

LOCAL lnColumn, lnRow, lnIndex1, lnIndex2, lnIndex3, lnIndex4

With This

*	Displays a 3d chart with 8 columns and 8 rows
*	data.
	.ChartType = 0  && VtChChartType3dBar - this will make a 3D Bar chart

	.ColumnCount = 8	&& This could be AFIELDS(laFieldsArray) of a cursor(table)
	.RowCount = 8	&& This could be RecCount() of a cursor(table)
	For lnRow = 1 To 8	&& This could be a Scan of the Cursor
		For lnColumn = 1 To 8	&& This could be For lnColumn = 1 to ALEN(laFieldsArray, 1)
			.Column = lnColumn
			.Row = lnRow
			.Data = lnRow * 10 &&Or something else e.g. EVALUATE(laFieldsArray(lnColumn, 1))
		EndFor
	EndFor
*	Use the chart as the backdrop of the legend.
	lnIndex1 = 0
	lnIndex2 = 0
	lnIndex3 = 0
	lnIndex4 = 0
	.ShowLegend = .T.
	.SelectPart(4, lnIndex1, lnIndex2, lnIndex3, lnIndex4) && VtChPartTypePlot
	.EditCopy
	.SelectPart(3, lnIndex1, lnIndex2, lnIndex3, lnIndex4) && VtChPartTypeLegend
	.EditPaste
EndWith

The other stuff I think it is your job - explore, invite, belive yourself!
Kind Regards