Guys long story short, when l try to open tf2 it gives the error 'msvcp120.dll is not found error' I think I accidentally deleted it.l tried redownloading it and it didn't work. I watched YouTube videos as well, none of them helped. Please help
You've probably already tried this, but did you try to validate the game files trhough steam?
Anyhow, I've never really experienced that error, in my time of playing TF2.
In worst case, you'd had to redownload the game.