This is the 216th most frequent Polish word.
warto
"Warto" means "worth it" or "it's worth."
Here, 'warto' is used to express that an action (visiting the museum) is worth undertaking or beneficial.
Warto odwiedzić muzeum w tym mieście.
It's worth visiting the museum in this city.
In this sentence, 'warto' is utilized to express uncertainty about the value or benefit of investing in the given project.
Nie wiem, czy warto inwestować w ten projekt.
I don't know if it's worth investing in this project.
This context shows 'warto' referring to the worthwhile nature of the action in hindsight.