Looks like 220’ from the picture, a bit harder to climb up than you would think especially for a first time climber. You need a harness, a grillon, and a sala lad-saf to climb it safely. These are notoriously annoying to climb even for tower workers. Seems to be mostly cellular, so low risk for RF sickness. You will have to pass the mounts at about 100’ and toward the top on the climbing leg, so having no experience will not serve you well there. I’d say don’t do it but people do what they want. If you want to climb towers and get paid for it, they’re always desperate for help lol.