All of these suggestions above are just gonna result in a cracked rim. If it's tubeless, then you might end up making things worse. To bend it back properly, you need a vise and a torch, not a hammer, wood, or a c-clamp.
Honestly, from your pic, it doesn't look bad. The bead might be sealing just fine. If it is tubeless and you don't want a rapid decompression during a R-hand curve (aka crash), I'd advise putting a tube in there.
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