This is an awesome movie made in 1989, it has two epic genres that go very well together, comedy and science fiction, similar to "Back to the Future" movie.
This movie has a second part as well, the first part of the movie is a story about Bill and Ted, they travel through time in order to make their project of history. In the second part, they are fighting their clone robots.
It's a little bit of a childish movie but it's definitely meant to make you feel good and you make you laugh. If you liked the first part I think that you gonna enjoy the second part as well, it's called "Bill and Ted's Bogus Journey".
[Source](https://imgp.whaleshares.io/0x0/https://images2.minutemediacdn.com/image/upload/c_crop,h_1412,w_2510,x_78,y_0/f_auto,w_1100/v1554926328/shape/mentalfloss/55079-mgm_0.jpg)