Hi @gowtham1907,
Based on the issue that you mentioned, do you want to update the Status column clicking the button?
Could you please share a bit more about the scenario, what is the data type of the CompletionStatusID column?
Not sure about the data type of the CompletionStatusID column, I assume that it is a Text.
1). Add a Gallery and populate it with your Dataverse table
2). Insert a button within the Gallery and set the OnSelect as below:
Patch(
EmailLists, // This is my Dataverse table, please replace it with yours
ThisItem,
{CompletionStatusID: "Completed"}
);
Patch(
EmailLists,
LookUp(
EmailLists,
CompletionStatusID = "Pending"
),
{CompletionStatusID: "InProgress"}
)

Regards,
Qi