When i meditate sometimes my eyes will open on there own does anyone know what that means? if it means,anything at all.

i think it just means your relaxed, that happens to me a lot, my eyes with kind of crack open while im meditating. Just got to hold em down with more eyelid force! or you can use an eye mask but those can be uncomfortable, there is a mask on amazon though that allows you to wear them and meditate with your eyes open with plenty of room for your eyes and it blocks out light.

If you're really relaxed that means your eyelids close, like when you're sleeping. There's no conscious effort to keep them closed.
It depends on the circumstances. They might open because you're subconsciously reacting to an impulse, they might open because you're trying to focus on something and it's following a reflex, etc.