Hi, is there a way to find out in which position I am in any of the ranks? I'd like to know where I am in the MHR but I don't know if there's a way to do it performing a search somewhere

Oh, and it would be nice to know how many points you're contributing with to your nation ranks!

There's no easy way. But here's my method. Check how many hotlaps you have uploaded. You'll have to count them manually. Since the ranks are sorted by the number of hotlaps uploaded, you should be able to pin-point your position rather easily.