You don't say what operating system you're working with, which version of the program you have or what format of video you're editing, but my guess is that the video isn't compatible with this version of the program. Possibly and HEVC or H.265 video.
Windows 10, Premiere elements 2020 with updates. Tried different videos from different sources. This video was from an iphone. The scrub arrows show up and work just not the timecode text (ie 00:00:00)