the check box Value from cell is disappear.

as Label option , the check box Value from cell is disappear 

Refer official page : https://support.microsoft.com/en-us/office/add-or-remove-data-labels-in-a-chart-884bf2f1-2e29-454e-8b42-f467c9f4eb2d#:~:text=Use%20cell%20values%20as%20data%20labels&text=for%20your%20chart.-,Right%2Dclick%20the%20data%20series%20or%20data%20label%20to%20display,the%20Values%20From%20Cells%20checkbox.