https://www.ronayers.com/oemparts/a/hon/506f6f2df8700229747b7b60/clutch-cover
This is my personal go-to source for factory Honda parts. sometimes they do have pricing listed for parts, but when you place the order they will tell you they can't get it. I cant imaging this would be the case for clutch cover bolts or the gasket. At the very you can usually find useful information such as thread size and length of bolts that you can then use to source your hardware elsewhere. in your case, you are looking for M6x32 and M6x40 metric flange bolts. as far as the gasket goes, you will likely only be able to find the factory paper style gaskets which I personally would prefer. rubber does not fair as well under heat or constant exposure to oils.