So Bdubs became the god of the sun during the empires crossover and his abilities included traveling to other smp's, traveling to other dimensions as well as traveling back and forth in time... And we know he keeps his divinity after as Pearl tells him to use the power of the sun against the zombies in Secret Life...so... would he be able to travel to Hels?

Oh! Bdubs lore! I didn't know his magic sun powers extended so far!

I mean yeah, if he's got world hopping powers he can definitely visit hels. Not sure why he would, since he hates the nether so much, but he could! Same with Renbob's camper van.