Here are practical skills you can learn in 6 months and start earning in dollars from anywhere, even as a beginner:

1. Virtual Assistance (Administration /Operations) 

2. Social Media Management. This skill is sought after by many small businesses. 

3. Data Analytics (beginner level)

4. Project/Product Management 

5. Copywriting/Creative writing
If you can write clearly, you can make cool money of your skill. 

6. No-Code Website Design (Wix / WordPress / Shopify) Every business needs websites today. Start making your money 

7. Technical Writing— if you're good in analysing situations this can be a plus for you. 

8. Product Management (entry level)

9. Graphics designing using Canva

10. UI/UX Design

Learning just one of these aggressively and passionately for the next six month guarantees a shift in your finances. 

Goodluck to you!