I've been working on a math paper on and off for years and I think I'm about ready to submit it to some Journal. I recently read that LaTex is preferred but I've already done $15$ pages with many equations and exhibits in MS Word. I think it looks pretty good but I don't know. Here is a screen shot of my Abstract. How do I get peer review? Where would you suggest I submit? and do I have to re-do everything in LaTex?
I can do LaTex if I must but how would I be able to use it on a MacBook Pro with OSX Mojave? On that platform is it a separate editor like TextEdit, Word, or BBEdit?
Which journal is right for the paper depends upon the sub-discipline (apparently number theory, or possibly geometry), and the level. Go to the American Mathematical Society Journals page for guidance.
$\LaTeX$ is strongly advised. MS Word is hopeless for truly sophisticated math typesetting.