They're not worth much. You should invest when you're ready to start a long-term career in the market, taking gains and losses as they come and not pulling out every time the seas swell a bit. If a correction hits right after you invest, it's hard luck. Time, however, will allow you to overcome even the worst luck. The other problem hidden in the original question is the false assumption that mutual funds somehow represent a safe haven against stock market declines.
Stock funds are nothing more than large baskets of stocks.
You own a little share of lots and lots of stocks instead of directly holding a smaller number of stocks. You're still invested in stocks either way. I wish I had an answer about the next few months for anyone considering starting, but of course, I don't. I choose to play a different game, looking out over many years rather than short term. The best course in my mind is to choose a strategy you're very comfortable with and then stick with it through all conditions.