@jsantos489 you should check the results of your flow that everything there is showing the correct number which I expect it will. So the problem is most likely in the column type in SharePoint. Unless there is a very good reason not to, I tend to use single line of tyext as my default type. So your NIF/NIE column, the telephone number column and possibly some others could all change to single line of text. The Capital Social looks to be a currency field wouldn't be so easy to sort out. But first check the flow results then try using single line of text columns. YOu might need to delete then recreate the columns.
Rob Los Gallardos Microsoft Power Automate Community Super User