Several thoughts here....
First of all, no one will know exactly how many souls one has won for the Lord. No one.
Anyone living their life for Christ is a witness to him and no one can tell exactly how that witness will touch someone's life. By being the kind of person who loves others, shares what they have and treats people decently, one can win someone over for the Lord and not even realize it. (Conversely, when someone makes a big deal out of their Christianity, then falls or is proved to be a hypocrite, it can turn a lot of people away from the Lord.)
So, don't worry if you're not gifted with the gift of evangelism or preaching or teaching... Exercise the gifts you have and extend to others God's love, patience, kindness, gentleness and self control... and you may win far more souls than many of those TV guys who may very well find themselves in the position of saying "But, but, we cast out demons in Your name and did miracles in Your name," and hear, "Go away, I never knew you."
Secondly, little study here regarding the crowns:
These are the "crowns" that we receive.
First, there is the crown of exultation... those others that are in heaven with us... 1 Thess 2:19
Second, for all who keep the faith, there is a crown of righteousness. 2 Tim 4:7-8
Third, the crown of life for all who love the Lord. James 1:12
Fourth, Peter mentions an unfading crown of glory for those who rightly and lovingly shepherd the Flock until the Chief Shepherd comes
Fifth, there is a crown for those who hold fast and do not deny Jesus' name, even when weak. Revelation 3:11
Now, these crowns seem to be quite symbolic or, who knows, they may very well be tangible crowns... and what shall we do with them? Most likely we will be in one accord with the 24 elders in heaven, who cast their crowns before the throne of Jesus.
But no, we are not in a competition... we are called to live our life in obedience and in bearing fruit... the fruit of the Spirit which will also bear reaping in of the harvest... God will judge you according to what you have been given, not according to how others see you "winning souls". It might help to note that not even Billy Graham ever regenerated even one person. The true 'soul winner' is the Holy Spirit.... we are but examples and are sometimes called upon to act as a mid-wife, when we can share what God has done for us.