It’s the fee the fund manager charges. Looking at mine, they call them expense ratios. Big broad stuff like S&p and total market is typically low fee <1%. But something that tracks a specific market sector, or a really active fund could charge >5%
A total market fund, or S&p 500 fund would be a good start. Pick something with a low percentage fee
Why would I ever want to see in the shower?
I remember going to our AAA office to pick That up. Our agent would walk through the trip with us.
In case you want to watch it from the beginning, took out the time stamp
https://redactle.net/ is a fun one