Welcome to the forum, Nikkolas.
On topic, I think it is only possible if one looks on the surface and sees Stalin as an authoritarian and then also fascism as authoritarian can one attempt to place Stalin as a Fascist. However if one where to actually look at the roots of Stalinism and fascism then it quite obvious that they are diametrically opposed to one another. This is another failing of liberal philosophy which takes a reductionist approach to authoritarianism of which regimes have long been present in human civilization far more than democracy and attempting to lump them together under one umbrella, if you will. This is especially true in terms of Stalin and fascism as liberals have considered both to be their primary enemies in the 20th century.
Despite the attempts to of some newer Marxists to say otherwise, Stalin’s brand of Marxism-Leninism was very much an attempt to put into practice a socialist transition phase with, at least ostensibly, the goal of achieving communism. This is of course diametrically opposed to capitalism, emphasizes the working class completely at expense of capitalists and regards fascism as its arch-nemesis. The official line being that fascism constitutes an ‘openly terroristic dictatorship of the bourgeoisie.’ Fascism on the other hand acknowledges both the role of the state and businessman as well as worker in the creation of a productive human society. Fascism has no intentions of the complete reckless abolishment and appropriation of private property that Stalinism is so fond of. Furthermore, the opposition to communist movements was at the very forefront in rise of the fascist movements with many business conservatives looking towards a militant, strong fascism to do what liberalism seemed incapable of - providing a bulwark against and protecting their rightful property from Bolshevik expansion. Said expansion was highly aggressive and it should not be forgotten the dreams of ‘global communism’ that many Marxists share - even if Stalin emphasized the Soviet Union first and foremost.
I could go into more depth about the deep-seated differences between Stalinism and Fascism but suffice it to say they are diametrically opposed to one and another and to say otherwise is a complete and utter misreading of history.