Games often assume variables change in specific sequences. Setting love = 100 might not trigger event checks that normally happen when gaining love incrementally. You could soft-lock yourself.
Get the latest unren.rpy from trusted GitHub repositories (e.g., "renpy-unren"). renpy save editor
Using the Ren'Py Save Editor is relatively straightforward. Here's a step-by-step guide: Games often assume variables change in specific sequences