The technology was once again the centre of controversy as Spurs defeated Brighton 2-1 on Sunday.
Harry Kane won a soft penalty for Spurs after VAR ruled he had been fouled by Adam Lallana.
But Albion's equaliser from Tariq Lamptey should have been disallowed after a foul in the build-up by Solly March.
Asked about VAR after the game, Mourinho said: "I have to try and stay away from this. I don't know what to say at the moment. My opinion is that I miss my old football, but with goal-line technology because it is obvious that it helps the game."
On the quality of Brighton , Mourinho added: "I was not surprised because I knew they were a very good team, with a good coach capable of doing what they did. Graham Potter is a very good coach.
"They have lots of good players and they caused us some difficulties. I believe it is more fair to say the teams with less history and stature if you want to say, they are getting better and better.
"It was a great reaction after they equalised, we hit the post twice, score and after that it was a question of managing the game well, like we didn't against West Ham."