Hello Safyra,

"Munt skopum vinna" might be translated as "shun your fate", because this line is from The Prophecy of Gripir, 52 (the Poetic Edda, the part 53 in original). The original is "mun-at sköpum vinna" ("our fates we shun not"), where "at" is a negative particle (thanks Frost Fox for both the Russian translation of this song and the notes to that).

The Prophecy of Gripir / Grípisspá:
Sigurth spake:
52. "Now fare thee well! | our fates we shun not;
And well has Gripir | answered my wish;
More of joy | to me wouldst tell
Of my life to come | if so thou couldst."

Sigurðr kvað:
53. "Skiljumk heilir, mun-at sköpum vinna.
Nú hefir þú, Grípir, vel gört sem ek beiddak.
Fljótt myndir þú fríðri segja
mína ævi, ef þú mættir þat."

I hope it was helpful.