As someone who loves the series I give it a 10/10 for being awesome. Really though you have to like this kind of thing to like it, it is a series about super heroes wrestling. Personally, I find it fun, I find the fights suspenseful, and honestly the reboot series has only gotten better, there is focus on secondary characters, everyone is getting good fights (even if they lose it feels like a fight worth watching), if you like action series just check it out.
That said the first... I think 20-40 chapters are most Super Sentai/Ultraman than wresting, and even when it gets into wresting it takes its time to truly find its footing. You can probably skip to the first Olympics and be fine, and continue from there.