ShiroKuro I feel your pain.
musescore.com is very confusing to me. It always lures me into a subscription. I mean, it is fine if I have a flatrate for downloading scores (with a subscription, I do have a flatrate, do I?), but honestly: How many scores per month can I learn? One - a half one - maybe two? In this case, I don't need a flatrate. No - I am willing to pay per score. With my learning tempo it is much cheaper, and I am not bound to a single online resource.
In this case, it just asks me to log in and offers to pay 0.99 with paypal for a download - but only in conjunction with a premium account. Without premium 2.49.
I already recorded WWYAMC, so I don't go beyond this step. But I assume 0.99 is somehow bound to my paypal account with monthly fee. And I assume 2.49 is a one time transaction; definitely the way I'd go.
Generally, I love musescore sheet music, because I can edit it with musescore editor. Easy transcribing, or changing font sizes. I can make out of a 5 pager a 4 pager. For instance, I can delete an advanced section, I am not able to learn. Sometimes it is wise to only make the font of the title extremely small, enough space for one additional staff line. In the best case, this means one page less.