Sorry if the tabs are too small to read, it's literally the best I can do on a vertical video. The solo is kinda hard to hear in the original mix, but I think the tabs are pretty close regardless!
This is kind of a messy solo, it sounds like Euronymous just kinda winged it and improvised with limited music theory knowledge. Regardless, this is a Black Metal staple and is one of the most iconic solos of all time from that genre.