You could do a Level 1 or 2 Certificate in Construction Operations. This will teach you some of the skills you'll need to get a trainee position with a company.
You'll usually need:
- 2 or fewer GCSEs at grades 3 to 1 (D to G), or equivalent, for a level 1 course
- 2 or more GCSEs at grades 9 to 3 (A* to D), or equivalent, for a level 2 course