What are some courses or certifications I could do to prepare for a new career while at work?

I have a decade of experience, 2 undergrad degrees and 2 masters degrees in religious nonprofit work, none of which is transferable to any other career. I don’t feel respected at my workplace and they just hired someone with zero experience to do a similar position but with much less responsibility and are paying them 15k more than I make. I think it’s time to get out but need a path forward.