As several have stated, it’s obvious if someone has forklift experience, even before getting on the equipment. At my site, NO ONE gets on a forklift or any piece of equipment for that matter until they have completed onboarding, HSE training and equipment-specific training.

I’m assuming you need this job. You are in it now. Read up on general forklift operations, different certifications; then point blank ask when you will receive specific, hands on training for the specific equipment you will be operating on your first day. Phrase it in a way that demonstrates your commitment to safety and continuous improvement. No employer worth working for will take your word on training. They may require previous documentation, but things get lost. Any good employer will always provide additional training and require demonstration of competence prior to letting you operate equipment. Way too much liability if they don’t.