Well, welcome to AGO.
As long as the film is 3M you can basically treat it like the clear coat on most cars. That said I wouldn't use harsh cleaners on the film, especially near the edges. And when polishing you don't want to continuously work on the edges since this could over heat the film and get product stuck under the edges, causing them to lift. Most waxes, sealants, and coatings are safe on clear bra films, but you should check with the manufacturer's technical info regarding maintaining/protecting the film. FYI, and polishing and or paint correction should have been done before the film was installed.