goosebumps = chair de poule. "juste y penser me donne la chair de poule". PS you wrote "au français" but it should be "en français".

When you say "Just thinking about that gives me goosebumps" the mean is "just thinking about that make me scarred" but goosebumps as one other signification in the phrase "to have goosebumps = to be a little cold"