Where does worth come from? Do you think you are worth something as long as people remember & recall you, but once earth and all things on it becomes extinct there is nothing to give you worth and your contributions then become worthless?
[ 23/9/20 ]
I like both of the other answers present as I start to write this one.
Value is always an assessment by someone against some set of criteria.
The map at this link is about AI safety research, but it is equally useful as a set of dimensions for assessing some different types of value.
Every time you help someone or something, you have a value.
It seems very probable that we will each die sometime, and it is not our death but what we do in life that determines the sorts of values we generate.
All we really have is the current moment.
What sort of influences, consequences, can we create with our current choices?
That, to me, seems to be the most important aspect of value.
Is it preparing food for someone, or making life a little more secure and interesting in some way?
All any of us can do is make the best guess we can, then have the courage to carry on with it.