Welcome @fiberavci to the Unreal Engine Forums!
This topic has been moved from International to Getting Started & Setup.
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Hey there Fiber! Welcome to the community! Looks like your post is empty! I’m going to guess from the image you may need to select the mode selector in the top left hand side and select the first one. If your viewport doesn’t appear, then you may need to reset the layout.
At the top:
Edit > Editor Preferences > Miscellaneous > Reset UI Layout
Let me know how it goes!
In the main editor window:
Window → Load layout → Default editor layout