Hello There, The Quality Score is directly related with the relevancy so to improve maybe you need some SEO work for your website to adjust keywords on the pages.
I have experience in PPC Marketing industry for 8+ years. My expertise is in Search Engine Marketing (SEM) on Google Adwords.
I will provide you
★ Keyword Research,
★ Ad Groups,
★ Ad Copy,
★ Negatives Keywords,
★ Ad Extensions,
★ Campaign Setup
★ Optimization
★ Campaign Management
★ Display Advertising
★ Add Extensions in Ad
★ Create Conversion Code
Thanks