Get Form Entries from Controls Inside a Gallery

ForAll(Gallery1.AllItems,
    Patch(SPList,
        Defaults(SPList),
        { 
          FirstName: TextInput1.Text,
          LastName: TextInput1_1.Text
        }
    )
);

Clear(colTemp);

Clear(colTemp);

Collect(colTemp,
    {
        tempRowID: Max(colTemp,TempID)+1
    }
);

Remove(colTemp,ThisItem)