I write m/m, and I could take a look at what you've got, but I've been burned from the other side of the beta situation...I've offered to help, and then been handed a pile of total garbage, with obvious typos and grammar errors, hugely illogical plot progression, etc.
So, if you've taken some care with your work and would like a reader, I'd be happy to offer, but it would be with the understanding that I might not finish the job - I might not even finish the first chapter, if it's too painful...
In terms of my credentials - not a lot. I've got a book coming out June 11 (soon, yay!) which you could have a look at
here, and I've sold another one to the same publisher with an August publication date. Other than that, I'm still pretty much a rookie myself.