Is there a fee to go up there? And how much?

If you go up through American Fork Canyon there is a $6 entrance fee (that gives you 3 days of entry to the canyon.)

There is no fee to drive through the loop; only if you stop to hike, picnic, etc.

Same as above

6$ to enter into canyon. You can do the alpine loop along with lake and cascade spring

I went up through Provo canyon. There is a fee to go through. It's just a few dollars per car. Probably the same as American Fork Canyon ($6).

There is a fee not sure how much it is , it is not expensive though