The markets are extremely overinflated as of now. We will see an adjustment by the middle of 2021 at the latest. I would wait until the news starts to sound so horrible you can’t help to do anything but invest. As many have mentioned, placing it in an index fund is a good idea. I would go for that! But just wait until the market has the next downturn, invest, and don’t look back.
I love people who claim they know what the market's going to do, and continuously call for a crash. These are the same people who have been calling for a crash for the last three years. Here's the deal, sure we eventually have corrections, but if you have cash on the sidelines then you just buy more and lower your dollar cost average. I did this pretty aggressively in March / April in peak market overreaction.
Just look at Apple and Amazon stock. Everybody was saying they were way overvalued and not to buy. What happens? Both of them absolutely crush earnings, and Apple the largest company in the world pops 10% in a single day on Friday.