How to carry your health into other places?

I am making an FPS game, and I want your health to carry over to the next level. Such as, if you have 30 health, your health when you teleport to the next level should be 30 as well. How would I do this? And I mean any health amount. Along with any ammo, weapons, or anything. The value of ammo is "Ammo" and "AmmoStored."

Use DataStoreService to save the current state of the player's health.

Don't make the health go up, Don't know how to. But I know that.