It takes 7-23 days to learn the civil engineering budget and 3-5 years to master it.
Higher diploma
If you are younger, you should get an advanced diploma in engineering, which will be used when you take the cost certificate in the future. By the way, you can learn the basics, and then you can buy a software like Guanglianda and get more contact with it. If someone takes it, there will be basically no problem. Look at the drawings and learn CAD basics. Of course, how long you study depends on your personal qualifications and hard work.
Firm; Office; agency
If you are old, you don't need to get a diploma. Go directly to the firm, watch others help others, look at drawings, and start with reading, counting and measuring, because the study of the firm is more an armchair strategist, but comprehensive, and all majors should watch and learn. But if you want to understand the reality, you still need to find an engineering company to take the project to the construction site.