Here are some polished versions of your title depending on tone, platform, and SEO focus:

Clean + Professional (Blog/Guide Style)

GUARANTEED! 15-Day Monetization Plan: A Must-Watch for Every New YouTuber by Gar

15-Day YouTube Monetization Plan for New Creators – Guaranteed Results

Step-by-Step 15-Day Monetization Plan for New YouTubers by Gar

Catchy + Engaging (YouTube/Video Style)

GUARANTEED! Make Your YouTube Channel Monetized in 15 Days 🚀

New YouTuber? Follow This 15-Day Monetization Plan!

15 Days to YouTube Monetization – Must-Watch for New Creators

SEO-Friendly (Search-driven)

15-Day YouTube Monetization Plan for Beginners (Guaranteed)

How New YouTubers Can Monetize in 15 Days – Step-by-Step Plan

YouTube Monetization in 15 Days: Guaranteed Plan for New Creators

I can also create a full content outline or guide showing what to do each day over the 15-day plan, including:

Channel setup and optimization.

Content creation strategy.

Audience growth tactics.

Steps to enable monetization and start earning.