This happened on a month old hybrid bike with 350km on it. I unluckily got the back wheel stuck in a grille when getting off a sidewalk. The wheel now wobbles a lot and keeps hitting the rear V-brakes on each rotation. The damage is isolated to this small region and I was wondering if this wheel could be straightened out, as opposed to replacing it.
That rim is dead. You need to replace the rim at least.
Being Aluminium it won't straighten, it will crack if you un-bend it.
If you choose to continue riding it then you may get more punctures, and you will be damaging the rear brake pad with every revolution./
If the tube/tyre is still holding air then they're probably ok to reuse.
If its an aluminium rim it will most likly break when trying to bend out the dent. But if the dent isn't being bent back but just the wheel straightened I would be scared of the brakepad getting caught up in the dent when braking heavily. Furthermore it seems to have a crack inside the dent, if this really is the case, the integrity of the wheel is compromised.