This is the 1582nd most frequent Russian word.
сможете
"Сможете" means "will be able to."
Here, "сможете" is used to indicate future ability contingent on effort.
Если вы постараетесь, то сможете достичь своих целей.
If you make an effort, you will be able to achieve your goals.
In this sentence, "сможете" is a polite question asking about the possibility of assistance.
Вы сможете помочь нам с этим проектом завтра?
Will you be able to help us with this project tomorrow?
This usage of "сможете" denotes future capability to rest after a preceding action is completed.