When you don’t know how exactly to true a bike’s wheel then you head to the nearest mechanic centre to fix your wheel. And on average it usually takes 1-3 days if you’re an expert in repairing the bikes. Or else if you’re giving your bike to a mechanic repair shop then it’ll 1-2 weeks and if it’s a busy season then it might take longer to fix the bike’s wheel. During the busy season, it might take around 3-4 weeks approximately.