There is usually about 4-6 campaigns running in each level under Sports and Crypto however they do get filled quickly. Each Crypto Campaign has a limit of about $120k before its filled so they tend to be filled quicker than the Sports that have a limit of usually around $1,000,000. Regardless of the limits though the campaigns start at a set time and finish at a set time no matter how full they are and the percentage you will make is clear from the start.