If it is repeating top or bottom it might be set as a header or footer. Usually selecting one instance then right click and select Repeating Object > Stop Repeating > All Pages will stop the text from repeating on each new page but you will still have delete all the other occurrences.

Or if you only want it on one page, select the text and Cut it to the Clipboard, then select all instances. Then Edit > Paste > Paste in Place. Make sure the pasted text is not set to repeat on all pages.