Esops turning from paper money to real money probabilities are super slim (<1%).
That being said if you believe in your chance, there is still need to see how much this 1 lakh can turn into. You need to know current valuation of startup(last fund raise) and see what multiple Nx times it can grow.
Ex: 1lakh esops at a unicorn stage will not give you more than 4-5x since most tech companies list at 4-5bn and in most cases below.
While 1 lakh esops from a seed stage valued at 10M can have upto 100x multiple possibility.
Also not most employees spend less than 4 years in a startup for various reason. You may only be able to vest like 50% of 1 lakh.
What's the startup valuation from last fundraise? Only that info can give possible multiples that can grow/be worth when you cash out.