There are high opportunities for WordPress developers, but there is not a great payout for most of these opportunities. WordPress is used majorly by new-age startups or businesses looking only to have a simple website rather than a functional one. I have been working in the Web development domain for the past 6 years, if you are looking to make some big money, look into other coding skills MERN, Next.JS, and Laravel will have better opportunities to earn, and grow