Is it possible to wait in a pulumi script? I am having issues with a service principal not being replicated so I would like to wait X seconds to see if that fixes it

You can try something like https://gist.github.com/lukehoban/fd0355ed5b82386bd89c0ffe2a3c916a. Or you can use https://www.pulumi.com/docs/intro/concepts/programming-model/#customtimeouts.