Here is a simple cheat sheet for Sublime Text 4. If you're looking for the official documentation:
Ctrl+P
Open file by nameCtrl+G
Go to line numberCtrl+R
Go to symbolCtrl+Shift+P
Command paletteCtrl+Shift+N
New windowCtrl+Tab
Switch between tabsCtrl+Shift+Tab
Cycle through tabs in reverse orderCtrl+T
Go to file in projectCtrl+Shift+T
Reopen recently closed tabAlt+.
Close tagCtrl+X
Cut lineCtrl+C
Copy lineCtrl+V
Paste lineCtrl+Shift+D
Duplicate lineCtrl+/
Comment/uncomment lineCtrl+Shift+/
Comment blockCtrl+Z
UndoCtrl+Shift+Z
RedoCtrl+J
Join linesCtrl+Shift+U
Transform to UppercaseCtrl+U
Transform to LowercaseCtrl+D
Select wordCtrl+L
Select lineCtrl+A
Select allCtrl+Shift+Space
Select content within brackets or quotesCtrl+Shift+A
Select content within tagsCtrl+Shift+L
Split selection into linesAlt+F3
Select all instances of the current selectionCtrl+F
FindCtrl+H
ReplaceCtrl+Shift+F
Find in filesF3
Find nextShift+F3
Find previousCtrl+Enter
Insert line belowCtrl+Shift+Enter
Insert line aboveAlt+Shift+2
Split view into two columnsAlt+Shift+1
Revert back to a single columnAlt+1, Alt+2
Switch between columnsCtrl+K, Ctrl+Arrow
Move file to a groupCtrl+K, Ctrl+B
Show/hide sidebarCtrl+K, Ctrl+T
Show/hide file tabsCtrl+K, Ctrl+U
Convert file to UTF-8Ctrl+K, Ctrl+W
Wrap selection with tagCtrl+K, Ctrl+X
Trim trailing white spaceCtrl+K, Ctrl+C
Copy path of the current fileCtrl+K, Ctrl+D
Insert date and timeCtrl+Shift+P, Package Control
Install Package: Install a new package