Help Me With This Situation

What if I Submitted A DMCA for website who copied my content will I redeem my position in SERPS after the DMCA notice ?

One is not directly related to the other. If the DMCA complaint results in the other website being removed, you should recover if it was impacting your rankings.

Income School did a YT video about a website that was copying their content, what they did to get it taken down and how they recovered after it was removed.