A VR camera must be supported in some way, whether it’s by a tripod or monopod, a clamp, or even a rover or guy wire. Removing this from the clip requires patience and takes a few steps, but with clone brushes, areas near the unwanted elements can be clone-stamped over the top and these edits can be replicated across all the frames in a clip.
Painting out part of a scene by clone-stamping over the top from adjacent areas can be effective, but rendering out the final video is a processor-intensive task. Be prepared to wait a long time for your final output to be rendered when using this technique.
Begin by selecting the clip that needs editing, then go to the Fusion page. The main viewer area can show one or two viewers; if just one is shown, click the rectangle to the right end of the small toolbar that runs along the top of this area. The Nodes panel in the bottom half of the window is where most of this work is done.