It literally translates to "to have pleasure," but it's more commonly used to express the feeling of enjoyment or having a good time.
Here are some examples of how it can be used:
* "J'ai beaucoup de plaisir à lire." (I have a lot of fun reading.)
* "Ils ont passé un bon moment et ont eu beaucoup de plaisir." (They had a good time and enjoyed themselves.)
* "J'espère que vous aurez du plaisir à la fête." (I hope you have fun at the party.)