He's already out there

Christ is already out in the world, looking for His lost sheep. (Matthew 18:12)
When we go out, we are accompanying Him.
He lets us join Him. (John 15:16)
He who does not gather with Me, scatters. (Matthew 12:30)
If you confess Me before men, I will confess you before My Father in heaven. (Luke 12:8)

Isn’t reading the bible out loud in public just a waste of time?
Who would be listening?
If you’re reading out loud, it’s not a waste of time, because even if no one else is listening, you are listening, and your partner is listening.

He who is not ceaselessly busy with the Word of God must become corrupt. (Martin Luther)

The world asks, Christians? Where are the Christians? I don’t see any Christians!
You can be a Christian out in the world by reading the Word out loud in public. (1 Timothy 4:13)
You let unbelievers see that there is a Christian.

What if people come and harass me?
Don’t argue, don’t curse, answer back with a flavor of wit to disarm them (Colossians 4:6), don’t stand on ceremony, but never let any physical dishonor be done to the Word of God.
You cannot stop the mocking and reviling, but you can keep the Word from being physically attacked.

What if people come and ask me for help?
If they need prayer, stop and pray, right then and there. (Ephesians 6:18)
If they need advice, keep it to a minimum, but always only what the Lord gives you to say (John 3:11), never argue, condemn, or bully anyone. (2 Timothy 2:14)
If they need food or money for food, do what you can, according to your circumstances. (2 Corinthians 8:13-15)
Even if you have money and cannot give it for whatever reason, don’t worry.
You’re not there to save the world.
You’re there to read the Word and do as it says to the best of your ability, and to the extent of your capacity.

Don’t be a hero.
If you can and do help, then help quickly and immediately, but with a blessing and prayer, and then quickly forget about it. (Matthew 6:3)
Greet everyone with a smile and a cheerful greeting. (Pirke Avot 1:15)
If anyone calls you a hypocrite or harasses you, don’t worry about it, only God can judge, dogs can only bark.