Good news: a great deal of users is going to see your profile!
When you select the rocket-shaped logo again, you will see a time gauge which will indicate the Boost time remaining.

Our advice to you is to capitalise on your Boost, by continuously Liking profiles the whole time so as to increase your chances of getting Crushes. Through Boosts, a lot of users will see your profile and potentially Like it, that’s why you should Like profiles in return to secure Crushes, during and after the Boost!