I'm surprised you, or anyone else who has responded, hasn't cited the 2022 Operator's Guide,
https://www.operatorsguides.brp.com/public/get_public_guide.php?idGuide=10990. Instructions for removing the top case are provided on page 50.
On the BRP website for LinQ accessories there is this rack that will go in the place of the top case if you want.
https://can-am-shop.brp.com/on-road/us/en/219400743-top-case-rack.html. I don't find any info on a decorative panel to put in the place of the top case. Although, the implication from the description of the rack is that the RT panel may fit. The LinQ system appears to be the same for the F3 and RT and is a universal accessory mounting system. It is used across the board on BRP recreational vehicles, as well as other brands. With a deep search all over the place you may find a cover or panel that will blend well with the F3 when the top case is off.