Make a guess...

Sometimes beds are drawn in bedrooms, take those as a guideline and set them as 200 or 210 cm in length.
Kitchen sinks are usually around 60 cms deep, you could take those.
It's not perfect, but better than nothing.
Use the zoom function to enlarge your background image.

H

..take those as a guideline and set them as 200 or 210 cm in length...

..a wild guess as nothing that allows an auto gauge even if i have the total area in sqft...

Or sometimes 190cm outside Holland/Scandinavia
Hansmex' advice is good as there is usually some identifiable length somewhere in the drawing (pick the longest). Even a door/window could give an approximate result as long as the proportions are correct.
Actually, if you have the area, you might be able to make an estimation of the length of one wall. After you have the approximation (I would not call it a wild guess). You can go back and adjust. Create a room in the drawing and see how well it matches the area you have. Then you can change the measurements in the background drawing. When you start drawing a couple of walls, often the lengths will become apparent as there are often some standard measurements in a plan.

ok

..let me see how I can upload the drawing on google drive or dropbox and see if anyone can guide a stupid me from there...

I once asked a local fisherman that I could not understand how he could navigate his boat through an archipelago avoiding every numerous, unmarked, underwater rock. His answer was: "How do you think I found them?" Your question is not stupid, I only reply because I have wasted some time trying to figure it out

... anyways as mentioned, I included a floorplan i wanted to draw in general, its a 1,066 sqft 3 bedders unit. Was wondering if someone could point me in the right direction with a visual image as I understand you and Hansmex was telling me some dimensions, so maybe a visual would be better to explain...

https://www.dropbox.com/s/cufix2uuvfyeicc/Brooks%201066sqft.jpg?dl=0